Thursday, October 26, 2006

The 5 Hottest Majors

By Meghan Aftosmis

Undecided? These majors score the most job offers and bucks. Get ready to cash in, CG!

1 COMPUTER SCIENCE
WHY IT'S HOT:
One million new positions will be created in information technology by 2014. Enough said. "I talked to a Microsoft recruiter when I was a junior. Microsoft asked me to intern for the next two summers and then gave me a job!"
Carolyn, 23, program manager, Microsoft
JOB OPTIONS: Big-name companies include Microsoft, Intel, and Cisco, but companies doing anything from cloning research to filmmaking need computer science grads.

STARTING SALARY(*): $43,000-$57,000

2 NURSING
WHY IT'S HOT:
People are living longer, and the health industry can barely keep up with the increase in our elderly population. Registered nurses in particular are in increasingly high demand. "I applied to a hospital in November of my senior year, and they offered me the job during my interview!"

Heather, 23, registered nurse, surgical intensive care unit

JOB OPTIONS: You could work at hospitals, insurance companies, nursing homes, schools, and more.

STARTING SALARY: $37,440-$45,000

3 ACCOUNTING
WHY IT'S HOT:
After the accounting scandals at Enron and WorldCom, Congress is cracking clown on fraud. And that means accountants are in demand. "I interviewed with all the large accounting firms recruiting on my campus and received tour job offers."

Amy, 24, dispute analysis and investigations associate, PricewaterhouseCoopers

JOB OPTIONS: The big four (Deloitte, Ernst & Young, PwC, KPMG) are obvious choices, but even the FBI needs special agents with accounting backgrounds.

STARTING SALARY: $41,800-$52,000

4 BUSINESS MANAGEMENT
WHY IT'S HOT:
Training for administration and management is so versatile--it can get you in the door of almost any business and help you work your way up to CEO. "I graduated during the recession of 2003, but I still got offers from my top two choices and was able to find my second job easily."

Tara, 27, associate, Deutsche Bank

JOB OPTIONS: Finance companies, retail headquarters, and nonprofits are looking for analysts, associates, and coordinators.

STARTING SALARY: $34,000-$45,000

5 CHEMICAL ENGINEERING
WHY IT'S HOT: These undergrads were the highest paid of 2005 because they know what companies want: how to make new products safely and economically. "There were so many jobs available that the most difficult part was finding what interested me the most."

Alison, 23, research engineer, Compact Membrane Systems, Inc.

JOB OPTIONS: You could develop anything from new medicines and new beauty products to new plastics for use in appliances.

STARTING SALARY: $53,500-$60,000

If I were a paper doll, I could try on a new job every day!

(*) All figures are based on starting salaries offered to graduates with a bachelor's degree in each field during 2005 or 2006.

Did you know? Being a girl in a male-dominated major pays off--literally! Groups like the Society of Women Engineers offer female-only scholarships to entice more applicants.

Cosmo Girl, Sep2006

Tuesday, October 24, 2006

Climbing The Ladder To Success

Firefighting careers are blazing hot!

Firefighters jump on their trucks while the alarm's still ringing, put out raging fires, track down arsonists, keep buildings fire-safe, and help injured people.

And that's only part of the job! A high school education is the first step into this competitive field. Bachelor's degrees (in fire science, natural resources management, or public administration) help firefighters advance in their careers.

Fire, rescue, and emergency medical services often go hand in hand. Most firefighters are certified as paramedics because they are often the first emergency workers to respond to an accident or a disaster scene.

Many people picture big red trucks and fire stations when they think of firefighters. In fact, firefighting jobs take many forms. Some firefighters are stationed aboard ships, in industrial complexes, in the wilderness, and at airports. Other firefighters teach fire safety in the community.

Throughout the country, from remote rural regions to big cities, there's plenty of work to keep firefighters busy. In 2004, they fought 1,550,500 fires in the United States, according to the National Fire Protection Association.

Interested in a job that goes from zero to 100 with the clang of a fire bell? Read on to learn about some hot options in firefighting.

Fire Chief: Top of the Heap
Until Debra Pryor decided to go into the field, she'd never seen a female firefighter. Today, Pryor supervises an entire fire department. As the chief of the Berkeley, Calif, Fire Department, she's in charge of a staff of 137 and is Berkeley's first female fire chief.

Pryor started out as a firefighter and worked her way up the ladder. Although it was hard for a woman to get into the fire service when she started, Pryor brought a special qualification to the table: a bachelor's degree. Her department required firefighters to have a high school diploma; supervisors had to have college degrees. Pryor says having the extra education right from the beginning gave her an edge. She went on to earn a master's degree.

After 21 years in fire service, Pryor is a jill-of-all-fireservice-trades. She can do anything 'from pulling down a burning roof to piloting a fire engine on an emergency run. She's also the department's most publicly visible member and its spokesperson.

Pryor says fire service is a "fabulous profession" for anyone who believes in community service. "My definition of community service is leaving the community better than I found it, and this," she says, "lets me give back."

Fighting 300-Foot Flames
When a building burns, the fire is usually put out in a matter of hours, sometimes minutes'. But wildfires can last days--even weeks. And when Wildfires get out of control, they can destroy thousands of acres.

Firefighters on wild lands, such as forests and fields, can sometimes be trapped by a wildfire, which can spread quickly. So firefighters in those areas must work fast to contain and fight the blazes. They use tools such as rakes and shovels designed for fighting wildfires. Some operate heavy equipment such as bulldozers and excavators to dig trenches to contain the fires and clear pathways to get to the burning area. Sometimes a blaze can catch a bit of wind or dry vegetation and spark a "jump" over barriers built to contain them. So wild-land firefighters' are trained to keep safe using signal flares, lights, medical equipment, and temporary shelters that protect them from smoke and flames.

Jeremy Bennett is the fire management officer for Menominee Tribal Enterprises in Neopit, Wis. He's fought wildfires for 12 years. He says the most important quality for a forestry firefighter is the ability to work as part of a team. "Certain dangers, such as 150 to 300-foot flames, dead trees falling over silently, rolling rocks, helicopters and planes flying just above the tree canopies … are part of the job," he says. Forestry firefighters watch out for one another.

Each fire presents a chance to learn something new, he says. "I have a passion for this profession and am very lucky to be doing something I enjoy."

Facing Sticky Situations
Shutting down the power in an ice-cream factory could have been a sticky mess, but the Hazardous Materials (HazMat) Division of the Kansas City, Mo., Fire Department took care of an ammonia leak faster than you can bite the end off a cone. They received a nice tip from the ice-cream maker too.

"They treated us to a couple of gallons," HazMat Battalion Chief Curtis Edwards says. The frosty treat was a nice change for a team specializing in one of firefighting's toughest areas. HazMat teams can face chemicals like add, gasoline, or ammonia; radioactive materials; and even weapons of mass destruction.

Firefighters must put in many hours of training to master the gear, such as breathing apparatuses and gas monitors, needed to face those situations. In addition, HazMat team members must learn to recognize chemical symbols and know the proper equipment to use to protect themselves and the public from lethal or dangerous chemical combinations.

"It's like a treasure hunt or a puzzle. You never know what you've got," Edwards says, adding that students interested in HazMat should take courses in chemistry, biology, and toxicology. Knowledge of those subjects helps the team determine how a substance can affect people and animals.

As scary as some of his team's calls have been, Edwards recalls a few funny incidents-like the time they responded to a call about a suspicious leak and found … pancake syrup.

Preventing Fires
You don't wait until your car runs out of oil to add a quart or two. Instead, you check the engine often and add oil when needed to keep your ride rolling. Fire marshals do that too. But instead of car oil, these fire pros keep tabs on safety standards to prevent a fire from starting.

Michael Skaza is an assistant state fire marshal in Rutland, Vt. He's been preventing fires in his state for seven years. Part of his job is to stick his nose in other people's business--for their own good.

Skaza inspects buildings to make sure they were constructed with fire safety in mind-materials, wiring, fire alarms, sprinkler systems, and emergency exits are all high on Skaza's list.

In addition to a sharp eye, fire marshals must have great English and science skills. "When I was in school, I often wondered, when will I ever use this stuff?" Skaza says. "Believe me, I use things I learned [back] then every day at my job." Fire marshals write many reports and must understand scientific and technical subjects such as chemistry and electricity.

Part Firefighter, Part Detective
Dallas Fire Department arson and fire investigator Debra Mullins doesn't put out fires. She looks for their cause. Mullins's job combines firefighting and detective work. She has the badges to prove it: Mullins is both a firefighter and a police officer.

She sifts through evidence to determine where a blaze started and whether it was an accident. For example, she examines the color of the flames and smoke and the burn pattern caused by the fire. She looks for the place where the fire started, called the

point of origin, which can help her determine whether a fire was accidental--caused by faulty wiring, for example--or deliberately set. If so, she's found the scene of a crime: arson.

Mullins's K-9 partner, Ashly, is trained to sniff out evidence. For example, Ashly has a nose for accelarants--the flammable liquids used to start or feed a fire. Mullins says the dog helps in many other ways too. When Ashly sniffed through the aftermath of her first apartment fire, she alerted officers to a refrigerator. The officers thought Ashly was interested in the chicken stored there, but when the canine insisted they take a closer look, they found that it was where the fire began.

Next, Ashly took off upstairs. "When we arrived at the top of the stairs, Ashly was nudging a kitten out of the closet," Mullins says. The family thought the kitten had died in the fire, but it was only hiding.

Firefighting requires smarts, physical strength, and technical skill. In addition to the basic tools of the trade--shovels, rakes, and hoes--firefighters must also handle air tanks, chain saws, and heavy hoses with high water pressure. In some cases, they operate fire trucks or bulldozers.

This is one tough trade, but the rewards--saving lives and property--make the effort worth it.

Do You Have What It Takes?
The standard and agility tests for firefighters assess upper-body strength and stamina. Here are a few examples of what aspiring firefighters must be able to do:

* drag a 165-pound dummy 35 feet to 125 feet

* wear about 50 pounds' worth of gear while carrying another 50 to 100 pounds of gear

* crawl through a maze with low visibility

* climb stairs while wearing weighted vests

* drag 50-pound hoses and connect to a hydrant

* carry chain saws or other power tools for about 75 feet

* swing a 10-pound sledgehammer to simulate forcible entry

Women's Work
Typically people think only little boys dream of becoming firefighters. Although women currently make up a small fraction of the total number of firefighters in the United States, females are making gains. Two decades ago, only about 1 percent of all firefighters were women. Today, fire departments in some of the nation's largest cities count women as 10 percent or more of their workforce.

Because the job is physically demanding, candidates have to pass strength and agility tests. In the past, female candidates were often disqualified because women generally have less upper-body strength than men. Now one of the testing methods has changed. Instead of carrying an unconscious person from a burning building, applicants now duck under the smoke and drag the person out. That's how firefighters really work, so the new method is a better way of testing their skills.

By: Moore, Carole, Career World, Oct2006

Great Horned Owls

THE GREAT horned owl symbolizes wisdom from mythology to cartoons, but it's better described as a stealth-bombing predator with wideranging tastes. "Great horned owis will eat just about anything," says Carin Avila, education coordinator for the Rocky Mountain Raptor Program. Also called a tiger owl, it feeds on rodents, rabbits, snakes, red-tailed hawks, opossums, bats, skunks (because it can't smell well), and even other owls. When food is abundant, it consumes only the choicest parts of its prey-usually the head.

This airborne killer, largest of the North American owls, is found throughout most of the continent and thrives in a variety of habitats: forest, desert, and tundra, as well as suburban subdivisions, city parks, and golf courses. Colorado. Kansas, and Nebraska have the highest density of great horned owls in the United States. Instead of migrating, these owls tend to stick to a small home range (usually several square miles) if the hunting is good.

The great horned owl is a vocal species, so your ears are the best tools to find them. During the courtship season in December and January, you can hear male owls signaling to females at night with four to five deep hoots. Interested females respond with a higher-pitched, two-syllable hoot.

Great horned owls aren't fussy about their homes or roosting sites. They prefer abandoned crow or hawk nests, but will also forcibly evict occupants When hiking in woods bordered by meadows and grassland, look for messy stick bundles high in the crowns of old frees or large hollow openings in trunks.

While hearing owls is easy, seeing them is tough. Camouflaged with gray, white, and brown feathers, they often perch at the edges of open fields, where at dusk and dawn they watch and listen for their next meal. Their roosting trees are often surrounded by neatly packed "pellets" containing the regurgitated bones, feathers, and fur of prey.

3 OWL HOTSPOTS BARR LAKE STATE PARK, CO
Great horned owls and 300 other bird species call this Denver refuge home. Circle the lake on an 8.8-mile trait that crosses cottonwood groves and prairies. Observation stations mark prime viewing spots, and rangers offer guided walks. (303) 659-6005; http://parks.state.co.us

CHEROKEE NAT'L FOREST, TN
Open meadows finged by trees are great places to watch owls hunt. Find dozens of these grassy bald spots along the 5.4-mile section of Tennessee's AT from Indian Grave Gap to UnaKa Mountain — including Beauty Spot Gap. (423) 476-9700; http://fs.fed.us/r8/cherokee

LOLO NATIONAL FOREST, MT
Prowl for owls on the Bitterroot River's Maclay Rat Interpretative Trail. The 1.8-mile hike winds through ponderosa pines, coltonwoods, and grassy fields that also hosl bald eagles, and red-tailed hawks. (406) 329-3814; http://missoulian.com/specials/hikebike

Leading-edge feathers on an owl's wings have a velvet fringe to decrease turbulence, allowing it to swoop in silently. Sunset and night are hunting hours, once an owl spots Stacks by gliding silently from its high perch.

An owl can turn its head 270 degrees — not a complete rotation, but close.

Hornlike feathered tufts on the head camouflage the bird by disguising its profile against foliage. Owls also utilize these tufts to signal one another.

A saucer-shaped facial structure tunnels sound directly to the ears, like a radar dish.

An owl seizes prey (Which can be twice or 3 times its own weight) with forward- and rearfacing talons that together like pincers. When it straightens its leg, a tendon relaxes and the talons unlock.

Asymmetrical ears, with one slightly higher than the other, help the owl pinpoint the location of a noise. Scientists have discovered that owls can catch prey entirely by sound.

Large, round, yellow eyes catch all available light at dusk and provide excellent binocular vision. "Owls have 2.5 limes better eyesight than humans." Avil a says.

When an owl is threatened, it increases its size threefold by puffing its chin feathers, flaring its wings, and expanding its chest.

Source: Backpacker

Facts and Fictions (Music)

Latin Grammy Misconceptions, Cleared Up At Last

With the Latin Grammy Award nominations comes the annual onslaught of commentary from those who think the nominations are too "safe," too "eclectic" or too whatever, because it's so much fun to disagree with what other people choose.

While it is tempting to launch my own little analysis, I would rather clear up some misconceptions that, judging from multiple conversations, people still have about the Latin Grammys. Read on to see how you do.

The Latin Grammy nominations are rigged. Fiction. No, these nominees don't just pop out of somebody's BlackBerry. All submissions are compiled and sent to all Latin Recording Academy members, who can pick their top five in the general field and nine other fields. Accounting firm Deloitte & Touche tallies and comes up with the top five in most categories, but some fields are sent to specific nomination committees for final review. The process mimics the Grammy Awards' procedure.

Not everyone who should be nominated is. Fact. But then again, who can account for individual taste? I would like to see my fave five up there, but since my vote is only one of 4,000, I have to lump it.

Labels and artists lobby for Latin Grammy votes. Fact. They most certainly do. As with politics, you need to create awareness in order for people to vote for you. What the Latin Recording Academy does not condone is lobbying prior to the nominations. Sending out e-mails or any missive asking for votes is a big no-no, and members are advised of the fact. Once the nominations are announced, however, labels and nominees actively engage in PR efforts to raise awareness to their material.

The Latin Grammys are too staid. Fact. When the big guys put out records, they tend to dominate the fray. In years past, it's been Juanes and Alejandro Sanz. This time, it's Shakira. In addition, this year's main nominees—Ricardo Montaner, Ricardo Arjona, Julieta Venegas and Shakira—reflect the market. They are all stalwarts of Latin pop with worldwide impact, not only in sales, but also in touring and imaging. Even the dominant rock nominee, Gustavo Cerati, is a two-decade veteran of the scene. Why, someone asked, are there no reggaetón contenders in the main categories? Perhaps because no reggaetón production was strong or compelling enough to compete there. That, at least, is my opinion, and voters seem to concur.

The Latin Grammys are too "out there." Fact. This has been a steady industry criticism for several years. Except that this year, the nominations swung in the opposite direction. There are few surprises in the current crop of nominees, save for the always delightful best new artist category, which includes such well-promoted acts as Calle 13 and Lena alongside more obscure acts like Pamela and Céu. The biggest surprise, in my mind, is Colombian Ines Gaviria, signed to indie Respek, with nominations in the pop and best new artist categories. Someone was obviously listening to her music.

There are too many categories. Fact. The field is starting to get diluted. When only 14 entries compete for five finalist slots, as happened this year with a few categories (best rock album among them), those nominees lose importance.

Univision artists dominate the Latin Grammys. Fiction. This is by far the silliest myth surrounding the Latin Grammys. Just look at the list of nominees and performers and count by label. There is no Univision conspiracy.

No one cares about the Latin Grammys. Fiction. Hey, I'm writing about them. And 9 million people watch them.

By: Cobo, Leila, Billboard, 10/14/2006

Faded Glory

The 1961 Panhard PL17 sedan featured several touches that amazed the press and trumped the competition. The problem for Panhard was that it did so in 1948. More than a decade later, the car's innovations were no longer compelling.

Though Daimler-Benz gets most of the ink, Paris-based Panhard et Levassor marketed the first production car to the public (using a Daimler engine) in 1891. The firm created the template for the modern automobile in 1892, when it built the first car with a front engine followed by a clutch and transmission driving the rear wheels.

Establishing a reputation for engineering excellence in the early part of the 1900s, Panhard served a select clientele. A Panhard roadster set a world speed record of 133 mph in 1934, and the company's mid-'30s Panoramique and Dynamic were considered benchmarks of haute design and innovation. But the Great Depression and World War II took their toll on the glory that was Panhard.

Following the war, the French government sought to encourage efficiency by making it easier for manufacturers of small, economical cars to obtain materials. Though it had previously catered to the wealthy, Panhard had an appropriate design in-house, thanks to the efforts of director Paul Panhard's engineer son, Jean.

The Dyna X emerged in 1946 and went on sale in 1947. The Dyna's body and high-revving 610-cc two-cylinder, air-cooled boxer engine were largely aluminum. With a four-speed transmission, front-wheel drive and a clever suspension, the combination resulted in a machine with greater comfort and performance than the Citroen 2CV or Renault 4CV. But Dyna's relative sophistication yielded a higher price and reliability issues. The car struggled for sales.

The Dyna X continued through 1953, with increases in engine size and power. For 1954, the body was restyled in a sleeker, more modern form and the model got a new name, Dyna Z.

You either loved or hated the Z's looks. Still, sales took off, and more than 120,000 units were built. Increasingly, less expensive steel was used, replacing the car's aluminum almost entirely by 1957. The two-cylinder grew to 851 ccs in 1959, putting out 42 hp in standard trim and 50 hp in the sporty Tigre model. 1959 also saw the final iteration of the basic Dyna design with the PL17.

Panhard wanted a completely new model. Again, financial constraints meant little change. A facelift elongated the shape, a visual trick that makes Dale Martin's 1961 PL17 appear greater than its 180 inches. The Midland, Michigan, collector first saw the car on eBay, and when it didn't sell, he struck a deal with its Florida owner.

Martin restored the car using parts from two other PL17s. One donated its 851-cc twin, an engine whose four-stroke sound and power surprise the driver. "It's quite pleasant," Martin says. "I've had it to 82 mph, and it would still go faster. It's amazing it pulls along as well as it does."

Such speed from 851 cubic centimeters is impressive even considering the low, 1800-pound curb weight. Martin's Luxe model has the 50-hp Tigre engine. Its fiscal horsepower (5CV) partly explains the PL17 moniker that derives from 5CV plus two other figures: six passengers and six liters of fuel per 100 kilometers. The Panhard's unconventional suspension (upper/lower transverse-leaf front, torsion-bar/trailing-arm rear), front-wheel drive and aluminum drum brakes with outboard cooling fins allow for spirited driving but don't detract from the car's sedan mission.

Whether hauling people or cargo, the PL17 could deliver with comfortable benches. Its idiosyncratic control layout centers on a steering column mounting everything from an elliptical speedometer and accessory rockers to the gearshift, ignition and a battery isolator switch. The handsome padded black dash and short hood are easy to see over.

By the early '60s, Citroen had acquired a major stake in Panhard and then allowed the company to wither. The PL17 sold well (130,000 total sales) until it was pulled in 1965, leaving Panhard with only one model, the newly developed 24 coupe.

By: Tegler, Eric, AutoWeek, 10/9/2006

Paper Recycling

COST CUTTER: Higher grades of recycled pulp require more reprocessing steps, progressively raising their cost to that of virgin pulp produced from trees, in general, cereal and shoe-box cardboard pressed from recycled material is significantly cheaper than a similar product made from new fiber, says Richard A. Venditti of North Carolina State University. Corrugated boxes and newsprint cost somewhat less. There are no real savings for office paper.

RESIDENTS RULE: Some 86 percent of U.S. residents have access to curbside or drop-off recycling, according to the American Forest and Paper Association. Participation is fairly high but could still improve. Schools are less likely to recycle; businesses even less so. Greater compliance would help collectors make money, in part because fast-growing countries such as China want to buy more wastepaper as an inexpensive raw material.

SEE IT, SORT IT: Sensors in the first automated sorting machines identify primarily the color of paper passing on a conveyor, allowing them to separate, say, brown bags from copier paper. Other sensors being perfected at companies such as MSS, Inc., in Nashville, Tenn., and in university projects funded by the Department of Energy can distinguish between the black and white of office documents and that of newsprint as well as differences in gloss among consumer packaging.

By: Fischetti, Mark, Scientific American

World Champ and Eagle Scout Jason Latimer Turns You Into Magician

Blue smoke swirls around Eagle Scout Jason Latimer as he holds up a card. Poof! It's gone. Whoosh! It reappears. Jason taps one card that becomes two…three…four. He links his arms, and cards start pouring out of both hands.

The audience claps wildly. And that's just one of his easy tricks.

"I was raised by a pack of wild magicians," Jason says, laughing. Well, maybe not. Actually this 24-year-old learned his first magic trick - how to separate black from red playing cards - on a cruise ship. He was 9 years old and bugged the ship's magician to teach him something, anything.

After that Jason took classes, read books and watched videos. There was no stopping him. Now Jason is a world champion, touring the world and wowing crowds with his amazing acts of prestidigitation (that's magician talk for magic tricks).

Practice, Practice, Practice
There's no big trick to becoming a great magician.

"You don't have to be double-jointed, though it helps to have some dexterity," Jason says as he pulls two giant steel hoops out of thin air. "The real trick is practice. When you've finished practicing, practice some more."

All that practice helped Jason become only the third American to win the World Championship of Magic. That, and his college education, helps him create his own tricks.

"There's a lot of physics and matt behind the magic," says Jason, who designs all his own tricks and props "You start with a goat -- like doing the famous cups and balls trick, only with clear glasses -- and work backward. If you can think it, you can draw it. If you can draw it, you can make it," he says.

Success!
Jason's ability to "reverse engineer" resulted in his invention, the Latimer Cups. "It's really a large twist on an old trick," be says as he appears to instantly move small yellow balls from one clear glass to another, One second each cup covers a ball, the next all three balls are under a single cup.

How did he do that?

He'll never tell. "It took me two years to perfect that trick," he says. But it was worth it. Now most everyone in the magic world knows Jason for his crystal cups trick.

"In Scouting I learned to set a goal like making the next rank or getting the next badge. Then you dedicate yourself to achieving the goal. Never give up," he says. "It's the same with magic, except I use my imagination to set the goal."

THE TRICKS
Like any professional magician, Jason Latimer is very secretive about his tricks. He'll reveal only that he's working on a full-stage act and would like to teleport himself to another dimension and then back to the stage, sort of like a Stargate. Can he do it? As Jason likes to say with a big smile on his face, "In magic, anything is possible."

You can find the magic here, as Jason teaches you a few beginning tricks:

A KNOTTY SITUATION
Show a handkerchief to the audience. Tie a knot in it. When the knot is untied there's a coin inside!

The trick:
Hold a coin behind the handkerchief with your thumb. Do not let the audience see the coin.
After you show the handkerchief, hold it as shown here.
Twirl the handkerchief until it looks like a Scout neckerchief rolled.
Drop the coin down the tube formed by the handkerchief.
Tie a knot in the handkerchief.
Give it to an audience member to untie.
Surprise! There's the coin inside the knot.
THE UNBROKEN TOOTHPICK
A wooden toothpick is put under a piece of cloth. Someone in the audience breaks it, but you pull it out unbroken.

The trick:
Before…

Get a piece of cloth with a wide hem. Put another toothpick in the hem before you do the trick.

Spread the cloth on the table and place another toothpick in the center. Roll the cloth…

…and have someone in your audience feel the toothpick. Be sure he feels the toothpick in the center.

Have your audience member break the toothpick.

Say some magic words. Unroll the cloth to show the unbroken toothpick, which you have sneakily removed from the hem.

Hold onto the still-wrapped broken toothpick--don't let it fall out of the cloth.

IT'S A SNAP!
Hold a piece of cloth by one corner. Give it a snap. Presto! There's a knot!

The trick:
Before…

Tie a knot in one corner of the cloth.

Hold the cloth by this corner with the knot hidden in your hand.

Now do the trick:

Show the cloth to the audience. Put the other corner in your hand.

Give the cloth a snap…

…and release the corner with the knot.

HYPNOTIZED HANKY
This handkerchief stands by itself and mysteriously moves.

The trick:
Hold the handkerchief as in this photo. Pull it up about four inches through your left hand.

Using your right hand, wrap an imaginary hair around the handkerchief.

Secretly use your left thumb to move the handkerchief back and forth. Ta-da!

Catch Jason on the Web: www.jasonlatimer.com


By: Daily, Laura, Boys' Life, Sep2006

Heads or Tails?

Flipping a coin in the air, catching it, then determining whether it has come up heads or tails is a common way to start off a game or settle a question. Because you expect that heads is as likely to come up as tails, it sounds like a fair way to make a choice.

But coin tossing isn't really random at all. A mechanical gadget can flip a properly positioned coin so that the coin always lands showing the same face. Some magicians can make a coin come up heads on every toss-even when they don't use a two-headed coin.

A new mathematical analysis now suggests that, in a typical toss, a coin is more likely to land on the same face as it started out on (see Toss Out the Toss-Up: Bias in heads-or-tails).

Research interest in the fairness of coin tosses goes back many years. In 1985, physicists Valdimir Z. Vulovic and Richard E. Prange of the University of Maryland developed what they described as a physically realistic mathematical model of a coin toss.

The physicists argued that coin flipping obeys Newton's laws of motion. Each flip depends on the impulse given the coin by the thumb and the height above the floor from which the coin starts. If you could know the impulse given by the thumb in a particular case or had a stable mechanical flipper, you could then predict how the coin would fall. Any randomness would be not in the flipping itself but in how precisely the starting conditions are known.

In the physics of coin tossing, the most important parameters are the coin's upward velocity and its rate of spin. When the spin rate is low, the coin acts like a thrown pizza. It's unlikely to turn over, even if it travels a long distance.

A coin may also come down without flipping over if it doesn't go high enough-even when it's spinning very rapidly. There would be too little time for the coin to turn over.

By calculating how often a coin turns over for a certain spin and upward velocity, one can predict whether it will come up heads or tails. The outcomes for a range of spins and velocities can be plotted on a graph. Such a graph reveals that for the spins and velocities typically encountered in coin tosses, tiny changes in initial conditions make the difference between heads and tails.

Thus, coin tossing is almost random. A look at the spread in the way real people flip real coins indicates that heads and tails would each come up about half the time.

Around the same time, mathematician Joseph B. Keller of Stanford University performed a similar analysis. He assumed that a toss involves throwing a coin so that it spins perfectly around a horizontal axis through the coin's center.

Keller showed that, for large values of the initial velocity, the sets of initial velocity values that lead either to heads or to tails are of equal size for a fair coin. Thus, half of the initial conditions lead to heads and half to tails.

Both of these analyses, however, ignored the fact that a tossed coin may also wobble, spinning around a tilted axis and precessing like a top. Wobbling introduces additional subtleties that end up biasing the results of coin tosses.

The bias isn't large, but recent experiments show it's there. Because it's very difficult to toss a coin "perfectly," this bias comes into play for just about any given coin toss.

References:
1985. Taking no chances. Science News 127(April 6):217.

Ford, J. 1983. How random is a coin toss? Physics Today 36(April):40-47.

Keller, J.B. 1986. The probability of heads. American Mathematical Monthly 93(March):191-197.

Klarreich, E. 2004. Toss out the toss-up: Bias in heads-or-tails. Science News 165(Feb. 28):131-132. Available at http://www.sciencenews.org/articles/20040228/fob2.asp.

Peterson, I. 2003. Flipping a coin. Muse 7(April):19. Available at http://www.sciencenewsforkids.org/pages/puzzlezone/muse/muse0403.asp.

1997. A penny surprise. Science News Online (Dec. 13). Available at http://www.sciencenews.org/sn_arc97/12_13_97/mathland.htm.

1997. The Jungles of Randomness: A Mathematical Safari. New York: Wiley.

1990. Islands of Truth: A Mathematical Mystery Cruise. New York: W.H. Freeman.

Vulovic, V.Z., and R.E. Prange. 1986. Randomness of a true coin toss. Physical Review A 33(January):576-582. Abstract available at http://link.aps.org/abstract/PRA/v33/p576.

For a mathematical introduction to coin tossing, see http://mathworld.wolfram.com/CoinTossing.html

By: Peterson, Ivars, Math Trek

Sunday, October 22, 2006

Investigating the Nature of Urban Life

In Phoenix, a small army of researchers is conducting the nation's first long-term ecological study of a city — and making some surprising discoveries in the process

While most scientists prefer to study wildlife in remote, pristine places far from the influences of people, Paige Warren opts for working right in the heart of human habitat. "You never know what kinds of interesting encounters you'll have," says the biologist, who has been questioned by police officers, cornered by chatty homeowners and watched by wary coyotes while investigating bird behavior in the residential neighborhoods and parks of Phoenix, Arizona. "The challenges are definitely unique."

Warren is part of a small army of researchers who are trying to learn everything they can about the effects of development, climate change, landscaping and other factors on the wild creatures that live in the Valley of the Sun, as the greater Phoenix metropolitan area is known. Head-quartered at Arizona State University (ASU), the National Science Foundation-funded project they are participating in represents the country's first-ever long-term study of what the researchers call a "human-dominated ecosystem."

"When we began this work in 1997, we decided we need to use the same scientific procedures to answer questions about an urban area that we use to study a wilderness location," says ASU ecologist Nancy Grimm, codirector of the Central Arizona-Phoenix Long-Term Ecological Research Project. Nearly a decade later, Grimm and the 100 or so biologists, geographers, social scientists and technicians taking part in the 13-year study are certain they are looking at a distinct, fully functioning ecosystem that has received far too little attention from natural scientists in the past.

With nearly three-fourths of the U.S. population now living in the nation's burgeoning metropolitan areas, observes Grimm, "it's imperative that we figure out how to maintain and improve the ecological health of the places where most Americans make their homes." The researchers believe there is nothing contradictory about the terms "nature" and "city." In fact, they've discovered that the overall abundance of birds and other organisms is much greater in Phoenix than in the surrounding desert.

One reason: Residents have created a sort of artificial oasis in the nation's fifth largest city. The municipal district and suburbs are dotted with canals, ponds, swimming pools (at last count, more than a half million) and dozens of parks and greenways. The community of Scottsdale alone now has nearly 170 small lakes, compared to zero in the mid-1900s. Yet in many respects, this desert oasis is not a Garden of Eden. All of the impounded water attracts a lot of mosquitoes, creatures normally not common in such an arid climate, and much of the area is landscaped with exotic vegetation that is displacing native flora.

"Homeowners can buy a variety of drought-tolerant plants at local nurseries," says Grimm, "but our studies have found that if those plants are not native to this region, they're not going to support our declining pollinators." Providing habitat for native pollinators, she notes, is vital to ensuring biodiversity.

Curiously, the scientists have discovered that more species of native birds prefer to live and breed in the city's wealthy neighborhoods than in middle- and lower-income areas. Warren and fellow biologists Ann Kinzig and Chris Martin came to that conclusion after measuring the abundance and diversity of birds in 16 parks in different parts of Phoenix. They found that the upper-income neighborhoods have, on average, nearly twice as many species as the low-income areas. "You'd think that just the opposite should be the case because the parks in the lower-income communities have more mature trees," says Warren, who has found similar results in neighborhoods in Baltimore, Maryland, site of a second National Science Foundation long-term urban study.

In fact, the birds seem to be attracted by the overall quality of habitat in a neighborhood around a park, not by the park itself. Higher-income communities in Phoenix, notes the biologist, tend to have more cacti and other desert plants — and more plant diversity in general — than the other residential areas, which make them so appealing to the animals.

As might be expected, the researchers have found that bird diversity is low in the noisier parts of the city. To successfully stake out territories and attract mates in such environments, some species, such as the blue-throated hummingbird, simply sing louder — a reflexive response, like people raising their voices in noisy restaurants.

"We still have so much to learn about the abilities and habitat needs of the wild animals living in our midst," says Warren, who these days spends more of her time analyzing data in her office at the University of Massachusetts than collecting information in the field. "We need to understand how to live sustainably with wildlife in our cities," she adds. "Otherwise, we won't have diverse wildlife and our communities will be much less vital places to live in."

By: Wexler, Mark, National Wildlife, Oct/Nov2006

Did You Know?

By early October 1781, British general Charles Cornwallis ordered horses that were behind the lines of siege to be killed so that they would not starve to death.

American commander in chief George Washington refused to accept a salary during the war.

In an attempt to fool British general Henry Clinton, American general George Washington ordered his men to build big camps outside New York City, to make it appear as if the Continental Army were preparing to stay there.

The British did not evacuate New York City, their last position in the United States, until November 25, 1783 -- more than two years after Yorktown.

Sixteen-year-old John Quincy Adams, son of John Adams, Served as his father's secretary and helped prepare paperwork for the Treaty of Paris. Both father and son would later become presidents of the United States.

The loss at Yorktown, Virginia, was such a devastating blow for Great Britain because one-third of all its North American forces were Stationed there.

Source: Cobblestone, Oct2006

Scary Facts About 10 Big Stars

Some of today's hottest names have a few skeletons in the closet: Their movie role résumés include performances in scream-fest films

KATHERINE HEIGL: Long before her role as model-turned-doctor Izzie Stevens on Grey's Anatomy, Katie played Jade — a love-struck teen on the run — in 1998's Bride of Chucky. One benefit: She got a chance to get used to all that faux blood!

KEVIN BACON: Keep this in mind the next time you play the game Six Degrees of Kevin Bacon: One of his first roles was in the 1980 flick Friday the 13th. He appeared as a camp counselor named Jack, who was murdered in his bunk bed.

TOM HANKS: Tom was in He Knows You're Alone, a 1980 movie about a young bride stalked by a serial killer. Some retro trivia; The film's movie-theater murder was so genius, it was restaged in Scream 2.

JOHNNY DEPP: He played a guy named Glen in the iconic 1984 Wes Craven horror flick (Even with feathered hair he was gorgeous!) Three years later, Johnny landed his breakout role on 22 Jump Street.

MICHELLE WILLIAMS AND JOSH HARTNETT: In 1998, they costarred in Halloween H20. Michelle started on Dawson's Creek that same year, and in 2000, Josh gained fame in The Virgin Suicides.

MISCHA BARTON: This glamorous OC alum was the dead girl hiding under the bed in The Sixth Sense, circa 1999. She was only 13 at the time, just two years older than her seemingly much younger costar, Haley Joel Osment!

CHARLIZE THERON: Charlize went from an uncredited role of Young Woman in her first flick, Children of the Corn ill, to winning an Academy Award for her amazing performance in the 2003 movie Monster nine years later.

RENÉE ZELLWEGER AND MATTHEW MCCONAUGHEY: These two blockbuster babes starred in 1994's Return of the Texas Chainsaw Massacre, a flick about teens terrorized by a family of psychopaths.

Source: Cosmopolitan, Oct2006

Monday, October 16, 2006

Interesting Facts about Moon

ASTRONAUTS ARE HEADING BACK TO EARTH'S NEAREST NEIGHBOR-EVENTUALLY, TO STAY

On July 21, 1969, millions of television viewers around the world tuned in to the news to watch an amazing event. For the first time ever, people were walking on the moon!

The now-famous moon walkers were American astronauts Buzz Aldrin and Neil Armstrong. For two hours, the astronauts kicked up dust and left long-lasting footprints in the moon's powdery gray soil. The experience caused Armstrong to utter some unforgettable words: "That's one small step for man, one giant leap for mankind."

Moon Mission
Since Aldrin and Armstrong's first moon walk, 10 more people have set foot on the gray globe's chalky surface. But no one has walked on the moon for more than 34 years. Now, the National Aeronautics and Space Administration (NASA) is planning another giant leap for mankind. It's gearing up to send astronauts back to the moon — eventually, to stay!

Why send astronauts back? Because our nearest neighbor in space is a great place to learn more about Earth and the rest of the universe. It could also serve as a launching pad for destinations farther than people have ever traveled.

Old Pals

The moon is much more than a chunk of lifeless rock orbiting Earth. "It's actually a piece of Earth itself," says Tony Colaprete, a scientist who works at NASA's Ames Research Center in Moffett Field, California.

Scientists believe that 4 billion years ago, a small planet the size of Mars smashed into Earth. The crash was so powerful that it chipped off a gigantic chunk of our planet and kicked it into space. That chunk is now the moon.

That's one reason to make a return trip, says Colaprete. Since the moon is made of ancient Earth, some scientists think that studying it up close will tell us what our home planet was like long ago.

The moon could also give scientists a better look at what the rest of our universe is like. Earth's atmosphere and city lights can alter the images that scientists see in telescopes. But the moon doesn't have an atmosphere. Nor does it have any of Earth's big city lights. So by setting up telescopes there, researchers could get a clearer view of space.

Home Base
Eventually, the moon could also act as a training camp for trips to planets. The 384,400-kilometer (238,855-mile) trip to the moon takes a spacecraft only two and a half days. Mars, though, is much farther. Its closest distance from Earth has measured 54,500,000 kilometers (33,864,730miles). So a trek to Mars could take almost nine months. "That lengthy time makes it much more difficult to go back if something goes wrong or there's something that we forgot," explains scientist Chris McKay, who works at NASA's Ames Research Center.

After it sends four astronauts to the moon for a brief period in 2018, NASA will have other astronauts visit it for longer stretches of time.

Eventually, colonies of astronauts could live there for six months.

But the moon has no food or oxygen, a gas that humans must breathe to stay alive. So how can astronauts remain there for such long periods? They'll use the same trick that extreme mountaineers use to survive in the wilderness, says McKay. On their first few trips, astronauts will take some supplies, such as oxygen packs and tasty meals, with them in separate cargo vehicles. But eventually, they plan to mine some supplies from the moon's surface itself. Some researchers believe that there's oxygen buried in the moon's dirt, and water hidden in its deep craters.

Figuring out how to live on the moon could teach scientists the skills needed to keep exploring the rest of the universe. Says McKay: "A moon base is the first step to an essentially endless voyage into space."

Words to Know

Moon — a sphere that circles around a planet. Some moons are rocky, while others are mostly ice.

Orbit — to circle around an object

Atmosphere — the layers of gas that surround a planet

Oxygen — a colorless, odorless gas that is found in the Earth's atmosphere

Crater — a large hole formed by the impact of a space rock

SPACECRAFT NAME AREA OF TOUCHDOWN
1 APOLLO 11 SEA OF TRANQUILITY
2 APOLLO 12 OCEAN OF STORMS
3 APOLLO 14 FREA MAURO FORMATION
4 APOLLO 15 HADLEY-APENNINE
5 APOLLO 16 PLAIN OF DESCARTES
6 APOLLO 17 TAURUS-LITTROW

By: Brownlee, Christy, Scholastic SuperScience, Sep2006

Sunday, October 15, 2006

Math's Great Uniter

TERRY TAO, 31: He searches the mathematical universe for his next big trick

THE CODE BREAKERS who are about to employ a powerful new method to piece together broken messages have UCLA day care to thank. While waiting to pick up their kids, Terry Tao, a UCLA mathematician, and Emmanuel Candes, a mathematician from the nearby California Institute of Technology, wondered if it was possible to reconstruct a garbled message even if you intercepted only bits and pieces of it. Using ideas from fields as diverse as geometry, statistics and calculus, they not only proved it possible (in special cases), they showed how to do it. Their technique is being adopted by anyone trying to clean up a jumbled signal, be they CIA agents tapping phone lines or doctors restoring spotty brain scans.

The work is quintessential Tao: a breakthrough in a new field that requires a mastery of techniques from across the mathematical spectrum. It's this kind of ingenuity that won Tao this year's Fields Medal (announced as this issue went to press), the Nobel Prize equivalent in mathematics. He's the youngest person to receive the Fields since 1986, which was two years before the then-13-year-old Tao became the youngest person ever to win the International Math Olympiad. In the decade since he earned his Ph.D. from Princeton University at age 21, "he's really taken the math world by storm," says Tony Chan, the dean of physical sciences at UCLA. Tao has made major discoveries in at least five branches of mathematics, and, Chan says, "the senior people in these fields are scratching their heads in awe."

Tao's most famous result brought an end to a mathematical search that had lasted for centuries [see box, left], in which he used techniques from several fields to uncover an astonishing pattern among primes. But to Tao, the traditional boundaries between different mathematical fields don't seem to exist. "They're interconnected in some way," agrees John Garnett, his colleague at UCLA. "You have to be Terry Tao to see all this, but they are."

TAO'S INFINITE PRIMES
Terry Tao and Ben Green at the University of Bristol in England found a surprising pattern among prime numbers. Here's the condensed version of their 35-page proof.

FIRST, FIND A PRIME
A prime is a number divisible only by 1 and itself, such as 3, 11 and 421.

THEN, CREATE A PRIME ARITHMETIC PROGRESSION (PAP)
That's a sequence of prime numbers in which each number is separated from the next by the same difference. The PAP "5, 11, 17, 23" is four numbers long, and each number differs from the next by six.

WHAT DID TAO AND GREEN PROVE?
There are infinitely many PAPs of every length. So "5, 11, 17, 23" is just one of an infinite number of PAPs with four numbers in it. There's also an infinite number of progressions that are five, 10 or even 1,936,046 numbers long.

By: Aaronson, Lauren, Popular Science, Oct2006

Seeker, Distant Earths

SARA SEAGER, 35: Her simulations tell astronomers what fingerprints life may leave on other planets

IN THE PAST DECADE, astronomers have found 200 new planets orbiting distant stars, and not one of them looks like Earth. Sara Seager, an astronomer at the Carnegie Institution of Washington, thinks that's set to change. Having devised a way to figure out what kind of atmosphere, if any, a far-off planet has, she's trying to prove that planets like our own dot the Milky Way.

Since information about what distant planets are made of is scarce, Seager created her early models of extrasolar planets by considering what Earth must look like from thousands of lightyears away. She then altered her "Earth" in a thousand different ways-doubling its size, or adding strange gases to the atmosphere-and recalculated its appearance each time. Her library of worlds not only reveals what newly discovered planets might be made of, it also gives astronomers ideas for what to look for. "She is predicting things for which we have little or no experimental data," says San Francisco State University astronomer Debra Fischer, a member of the renowned team credited with discovering most of the known planets outside our solar system. "And those predictions drive all our observations."

In fact, Seager's models helped in finding the first atmosphere around a distant planet. In 1999, just one month after Seager earned her Ph.D. from Harvard University, astronomers discovered a planet that passes in front of its parent star during every orbit as seen from Earth, blocking a small but detectable amount of starlight. Seager plugged what was known about the planet into her models and predicted that this Jupiter-like "gas giant" would have sodium and potassium in its atmosphere. Two years later, astronomers searched for and found these chemical "signatures."

Seager has since used her technique to chart the atmospheres around 12 worlds, and now she's looking for chemical signatures like ozone, which could indicate Earth-like conditions and maybe even extraterrestrial life. She's cataloguing every potential chemical that might be released by alien life and modeling what biosignatures each compound might leave in a planet's atmosphere. That way, when a telescope brings back those first signs of a living world, we'll recognize it for what it is: another Earth.

By: Pacella, Rena Marie, Popular Science, Oct2006

Hydrogen Nano-Architect

OMAR YAGHI, 41: He's building the minuscule scaffolds that could one day hold the hydrogen in your gas tank

OMAR YAGHI walks out of his chemistry lab at the University of California at Los Angeles, closes the door, and looks over his shoulder. "I've had a terrible secret for most of my career," he says with a sly grin. "I'm afraid of chemicals."

It's an unlikely phobia for a chemist whose research papers rank among the most influential in his field. But Yaghi chose his field for its intellectual puzzles, not its explosive ingredients. Fill a jug with one of the materials he's invented (it looks like baby powder), and, as paradoxical as it seems, it will hold more natural gas than an empty room. Many chemists believe that Yaghi's creations, if suitably tailored to store hydrogen, could lead to the first workable fuel tank for a hydrogen car.

If you zoomed in a billion times, his substances would look like enormous scaffolds. Materials scientists had seen similar frameworks before, but they couldn't custom-build them for specific purposes. "It was a dream" to engineer these frameworks to chemists' specs, says University of South Florida professor Mike Zaworotko. "Yaghi was the person who turned it into reality."

To build the frameworks, Yaghi used tiny metal supports, which, because they form stable joints, allowed him to create nearly any pattern. His tight-knit honeycombs, for instance, are great at storing gases-as gas molecules stick to the crossbeams, they draw close together, becoming compressed without high pressures or low temperatures.

"We [humans] like to control our surroundings," Yaghi says. "I'm no exception." Even as a child in Jordan, Yaghi wanted to manage his life on his own; he felt offended whenever his parents checked up on him by asking for his report card. He moved to the U.S. to start college at age 16 and has organized his days around science ever since. "I find that shaving in the morning, taking a shower, is an impediment to me getting to the lab," he admits.

Within the next few years, Yaghi's devotion could pay off in real-world applications such as filters that capture the carbon-dioxide emissions from smokestacks. But to Yaghi, such uses are a secondary concern. "I didn't start out to solve some big societal problem," he says. Rather, he's always simply chased the unknown. "If you do that honestly, then usefulness to society will come."

By: Aaronson, Lauren, Popular Science, Oct2006

Girodet France's Romantic Rebel

"As he veered away from orthodox classicism, [the artist] made his subjects increasingly evocative and dreamlike, sometimes adding a strange, erotic charge."

ANNE-LOUIS GIRODET de Roussy-Trioson, or Girodet as he commonly is referred to, was much admired in his own time, although he is not especially well known to the American public. Girodet (1767-1824) was a painter of genius, but also a rebel bent on confounding expectations. His literary sophistication, preference for the bizarre, and ambiguous eroticism, as well as the mysteries surrounding his life and relations, have remained a source of fascination and bewilderment. Girodet created a painting style very much his own--combining intellectual refinement and sensuality.

Girodet's career was shaped profoundly by the dramatic social and political upheaval brought about by the French Revolution, which ignited in 1789. A rebellious pupil of Jacques-Louis David during the 1780s, Girodet early on developed his own idiosyncratic style. David's Neoclassicism, the prevalent artistic movement of this period, was intended--in its antique subjects and rigid style--to invoke the stoic ideals of Republican or Imperial Rome. The young Girodet approached such subjects and worked in this manner on propagandistic history paintings.

After a period of study and practice in Rome, he broke free of his teacher's influence, creating highly imaginative compositions that he hoped would surpass David in their intensity of artistic expression. He asserted his independence in an austere "Pieà" (1790), painted from a provincial monastery. His final break with David, however, manifested itself in the mythological "The Sleep of Endymion" (1791), exhibited to great acclaim at the Paris Salon in 1793.

Girodet continued to eschew the rationalism of the Neoclassical style in which he was trained in favor of a more imaginative mode, ranging from the spectral vision of "Ossian Receiving the Ghosts of the French Heroes" (1801), commissioned for Napoleon's retreat at Malmaison, to the apocalyptic "Scene from a Deluge" (1806). This monumental canvas, depicting three generations of a family balanced precariously over floodwaters, secured Girodet's ultimate triumph over David--in 1810, it was named the best history painting of the decade over David's "Intervention of the Sabine Women" (1799).

Like many of David's students, Girodet commemorated Napoleon's regime in portraits as well as history paintings. The exhibition includes one of the paintings of Napoleon in imperial costume as well as drawings and an oil sketch related to "The Revolt of Cairo" (1810). In illustrating this episode from Napoleon's Egyptian campaign, Girodet gives free reign to the exoticism and violence of the emerging Romantic fascination with Orientalism.

As he veered away from orthodox classicism, Girodet made his subjects increasingly evocative and dreamlike, sometimes adding a strange, erotic charge. He began exploring themes of a more Romantic nature, taking up literary subjects that involved the irrational and the exotic. He executed pictures representing the legends of Ossian (a fanciful Nordic myth contrived by contemporary writer James MacPherson) and the tragic story of the American Indian woman Atala, based on the eponymous novel by his friend, Romantic writer François-René Chateaubriand.

The exhibition features a broad range of Girodet's creations, bringing together approximately 110 paintings and works on paper, including portraits of the leading figures of his time, as well as more intimate portrayals of his family members. The artist's oriental fantasies, replete with exotic costumes and dynamic imagery, culminated in his spectacular "The Revolt of Cairo," a depiction of a Mameluke rebellion during Napoleon's Egyptian campaign in 1798. Two related works are featured to evoke this major work: a beautiful sketch for "The Revolt of Cairo," indicative of Girodet's fascination with the fervor of the Muslim insurrection, and a "Portrait of Katchef Dahouth, a Christian Mameluke." Girodet's admiration for the courage and passion of the Egyptian Mamelukes caused him to portray them with an impassioned dynamism that strongly would influence Eugène Delacroix and other French Romantic artists.

Also highlighted in the exhibition are Girodet's lesser-known--but immense--talents as a draftsman. A wide selection of his preparatory drawings for paintings and his highly finished sheets for book illustrations--such as Virgil's Aeneid and Jean Racine's Phaedre--are featured.

"Girodet: Romantic Rebel" will be on view at Canada's Montreal Museum of Fine Art, Oct. 12-Jan. 21, 2007.

Source: USA Today Magazine, Sep2006

Spare No Expense

If cost is no issue and you're looking for an extraordinary effect, check out liquid nitrogen foggers.

Even by casino standards, the Crown Casino in Melbourne, Australia, is pretty spectacular. With two state-of-the-art theatrical venues, over 30 bars and restaurants and, of course, the obligatory forest of gaming tables and slot machines, the Crown is a wildly popular destination for thrillseekers of every stripe. If you are a theatrical technophile, however, the real show is in the atrium, where a massive fountain, designed by Wet Design of Sun Valley, California, spills out an hourly display of bubbly, boiling whitewater. What sets this fountain apart from other dancing water spectacles is two Dry Fogger Mammoth liquid nitrogen foggers buried in the car park below, provided by one of the more interesting companies you are likely to encounter, the appropriately named Interesting Products of Chicago.

"Liquid nitrogen effects are not just like water, they are water," says Larry Schoeneman, president of Interesting Products (www.interestingproducts.com). "The great thing is, they don't leave any moisture behind." Once the moisture in the fog is no longer exposed to the cooling effect of the liquid nitrogen, it quickly gets reabsorbed by the air and disappears. Anyone familiar with the trademark puddle left behind by ordinary dry-ice foggers will appreciate being able to fill a stage with low lying fog without creating slip hazards for performers. The European tour of Riverdance, for example, carried two Dry Fogger Mammoths to avoid upending any of those reeling feet.

In addition to leaving no moisture behind, thus creating no safety hazards or water damage, liquid nitrogen (generally known by the moniker "LN2") has two other main advantages over more traditional dry-ice or glycol-based fog machines: the fog sits close to the ground and dissipates quickly, making it easier to control; as well as being odorless, nontoxic and non-staining.

Liquid nitrogen systems fall into two basic categories. In the first type of system, the atmospheric effect is created inside a closed tank. The resulting fog is then pumped out to where it is needed. This creates a rolling, billowing fog that hugs the ground. (If you have ever seen a film where the lead character appears in heaven, wading through a waist-high cloud of angelic fog, you were probably looking at an LN2 effect.) While the machine itself creates a low level of noise, it can be placed away from the stage, making this effect essentially silent.

The second kind of effect, the so-called "burst" effect, is created in the open air, where a nozzle sprays out LN2 through the air, producing a white blast of fog that can be directed straight up, like a geyser. This type of effect creates a rather loud hissing sound, restricting it to environments with a high noise level, like rock concerts or theme park shows. Burst effects are more dependent on the local humidity and work best in areas that are hot and humid.

Liquid nitrogen effects work by creating a miniature weather system and manipulating temperature, humidity and something known as the dew point. The atmosphere's ability to hold humidity increases with temperature. When the atmosphere reaches total saturation (100% humidity) at a particular temperature, it has reached the "dew point." Any rapid increase in water being forced into the air or decrease in temperature will force the extra water to be condensed into tiny droplets of water--or fog. When the temperature of a water-saturated atmosphere drops, a fog of water vapor appears. San Francisco's trademark fog banks are created when warm air comes into contact with cold water welling up from the ocean depths just outside the Golden Gate Bridge. As the air cools, the extra humidity has nowhere to go and out come those famous Sam Spade fog banks.

Likewise, when a burst of very cold liquid nitrogen is fired into warm, humid air, whether inside a contained tank or out in the open, it suddenly and drastically chills the air, dropping it below dew point, releasing the water and creating a billowing fog. The effect is more pronounced if the air is preheated and preloaded with water, which is why most liquid nitrogen effect machines contain large boilers, which produce steam. By firing the nitrogen into the steam, the dew point changes drastically and instantly. Result: a fog bank worthy of George Sterling's "cool, grey city of love."

All this romantic fogmaking doesn't come easy, or cheap. Liquid nitrogen is difficult to handle because of its extremely low temperature (about 320 degrees below zero Fahrenheit) and must be delivered in specially designed 180-liter or 240-liter vacuum bottles, known as "dewars." For large-scale, permanent applications, bulk storage tanks are installed and refilled from insulated tank trucks. Nitrogen itself is not toxic--70 percent of our atmosphere is made of it--but it can cause problems in high concentrations, because it dilutes the oxygen that we need to survive. Care must be taken when designing LN2 effects that the fog is not allowed to pool in a low-lying area, such as a pit, where it would lower the oxygen concentration and make it difficult for a performer to breathe. In these extreme situations, oxygen deprivation could lead to lightheadedness or loss of consciousness. While this situation is extreme and avoidable, care must be taken when designing the effect. Many large-scale LN2 systems contain oxygen-monitoring sensors to alert technicians if the percentage of breathable oxygen dips below the OSHA requirement of 19.5 percent.

So, how much does all this cost? It is difficult to put a price tag on LN2 systems because they are so often custom built, but be prepared for that second mortgage. The Dry Fogger Mammoth from Interesting Products (currently seen in Cirque du Soleil's KÀ at the MGM Grand in Las Vegas or La Nouba in Orlando) lists at around $32,000, which doesn't include the facility plumbing or storage tank, let alone the liquid nitrogen itself, which pumps through the machine at two gallons a minute. Of course, for some people, the cost is worth it: KÀ has four of them.

Liquid nitrogen sits atop the list of low-lying fog effects in scale, beauty, safety and, unfortunately, cost. But if you've got that rich uncle, and you want the queen of fog effects, there is nothing like it.

By: Campbell, Drew, Stage Directions, Sep2006

Entertain the Queen

"Here the Milky Way is so rich that an observer hardly needs any guidance; he is sure to stumble upon interesting sights for himself." This is how Garrett Serviss describes the binocular view of Cassiopeia the Queen in his Astronomy with an Opera Glass (1888). Serviss' charming book introduced the idea that people could use binoculars to view the heavens. Of course, binoculars made back then don't compare to the quality found in even the least expensive binoculars today. But his equipment's low quality didn't deter Serviss from viewing the binocular universe from his home in Brooklyn, New York.

One of Cassiopeia's sights Serviss mentioned lies near the star Zeta (ζ) Cassiopeiae. You'll find Zeta just south of Schedar (Alpha [α] Cassiopeiae), which marks the lower-right corner of the Queen's "W" pattern. Through binoculars, 4th-magnitude Zeta's distinct aquamarine hue contrasts nicely against Schedar's orangish tint.

Zeta lies at the end of a semicircular asterism of seven fainter stars that Serviss described as an "array of stars … in a broken half-circle, which may suggest the notion of a crown." Together, they resemble a backward 3 or a miniature Corona Borealis. Because older depictions of the constellation show Zeta representing the Queen's head, "Cassiopeia's crown" seems an appropriate name for this little asterism.

Let's go deeper into the constellation by following the zigzag path along the Cassiopeia five-star "W" to Ruchbah (Delta [δ] Cassiopeiae), at its lower-left corner. Aim half a binocular field to the southwest of Ruchbah toward 5th-magnitude Phi (φ) Cassiopeiae. You'll see a second fainter star just to Phi's southwest as well as a tiny smear of dim starlight to the north. Together, they form the Owl Cluster, NGC 457. The two brightest stars mark the owl's eyes, while the fainter suns outline its body and outstretched wings. Some observers imagine a dragonfly here, while others see the movie character ET. Although most binoculars reveal the cluster, you'll probably need at least 15x to see any hint of these heavenly creatures.

Most studies indicate Phi doesn't actually belong to NGC 457, but, instead, just happens to fall along the same line of sight. Strangely enough, Phi appears to move through space in the same direction as the cluster. This usually indicates a physical association. If that's so, then at the duster's distance of 9,000 light-years, Phi would have to be an incredible 250,000 times more luminous than our Sun.

Next, let's stop by open cluster M103, located to the other side of Ruchbah. My 10x50s show this group as a small triangular patch of starlight nestled in a pretty Milky Way field. I can make out four or five separate stars here. The rest of its 170 members pool their faint light to create what looks like a tiny arrowhead. Others think M103 resembles a handheld fan.

Scan the area around M103, and you will notice the hazy glow of NGC 663 a little east of the halfway point between Ruchbah and the star Segin (Epsilon [ε] Cassiopeiae). In fact, you may see it before you even notice M103. NGC 663 looks like an unresolved blur of light through my 10x50s, while my 16x70s add a few feeble points of light.

Next month, we'll take the sky's camel for a ride down a celestial cascade. Till then, remember, two eyes are better than one!

By: Harrington, Phil, Astronomy

Wednesday, October 11, 2006

Chuck Norris: This good guy always wins

For a skinny kid growing up on a sleepy college campus in the suburbs of Kampala, Uganda, in East Africa, Chuck Norris was the ultimate movie hero for one reason -- he could beat any bad guy, and he didn't need a gun to do it.

It was the late 1980s and early 1990s, and for most teenage boys in my neighborhood, martial arts action stars and larger-than-life characters who could take on any villain were in vogue.

And Norris, a former six-time karate world champion, simply became The Man.

Forget Walker, Texas Ranger. I'm talking about the Norris of Code of Silence (1985), Good Guys Wear Black (1978), An Eye for an Eye (1981), Invasion U.S.A. (1985), The Delta Force (1986), Delta Force 2 (1990), Missing in Action (1984), Missing in Action 2 (1985), Braddock: Missing in Action III (1988).

Sure, we also had Sylvester Stallone, Arnold Schwarzenegger, Jean-Claude Van Damme, and later Bruce Willis, but none of them came close to Norris.

For one thing, he was not bombastic. He didn't have a massive chest or rely on oversized guns and unfamiliar accents. He was the lean and soft-spoken hero, who rarely delved into touchy-feely sentimentality but somehow always got the girl.

Nobody could take Norris in a one-on-one fight; even Bruce Lee had to go a few rounds before taking him down in Return of the Dragon (1972), but Lee was in a class of his own.

I remember one balmy Friday afternoon in 1989, in an incredibly crowded classroom at Buganda Road Primary School in the heart of Kampala when Norris -- the superhero -- came alive for a couple hundred 11-year-olds, including me.

My friends and I squeezed into the small classroom that had been converted into a rudimentary movie theater on Fridays. It had a 32-inch screen television with a shaky picture and even worse sound quality.

An Eye for an Eye, the first Norris movie I ever saw, was the featured film. The movie itself was nothing special, especially for a bunch of kids who knew little about American culture, much less the intricacies of being a San Francisco police officer framed in an undercover sting operation.

But we understood action, and who the good guy and the bad guys were. Norris was a good guy. I distinctly recall the scene in which he stole the show.

It was a one-on-one fight with a much bigger and stronger enemy. From our standpoint, Norris was clearly the underdog. He had suffered many injustices in the movie. Everybody was out to get him and so we rooted for him.

We feared Norris would lose the fight. He'd been slapped and kicked around, and even staggered to the ground a few times until one point when the bad guy charged at him for the last time. And we knew it. We could see the determination in his eyes.

And that is when he performed his classic roundhouse kicks. Swinging on one leg as his fulcrum, he leveled a couple of kicks, but the bad guy barely flinched.

The room, packed with little boys and girls squeezed on benches and standing on desks, grew louder with every kick.

The filmmaker must have known we were waiting for him to cut down the bad guy, because Norris sprang in the air and with three swift roundhouse kicks, smacked his nemesis in almost the same spot until the giant just tumbled to the ground.

You should have been there. It was sheer exhilaration. We jumped, hugged, screamed, broke desks and chairs -- all because of Norris.

I knew then that I wanted to be like Norris. And thus, a Walker, Texas Ranger fan was born, long before I knew what it meant to be a Texas Ranger. And now, thanks to Norris, I know that "when you're in Texas look behind you, 'cause that's where the Ranger's gonna be."

By: Rujumba, Karamagi, Blade, The (OH), Sep 06

Interesting Facts about Chuck Norris

Q&A

The action star and former Walker, Texas Ranger is now an online cult hero and founder of the World Combat League, a new fighting organization.

How does your professional fighting league work? It's six-person teams--five men, one woman. Each person fights a 3-min. round--3 minutes of full-throttle fighting. My mind was on a male league, but we got lots of e-mails from women who said, We want to fight! These women are tough. I wouldn't want to take them on.

So violent--like your movies. Why have my movies been so successful? People like action. But in my movies, violence is a last resort.

Does Hollywood take you seriously? No, but I didn't start acting expecting to be Laurence Olivier. I wanted to do films that were entertaining.

Walker obviously has to love Westerns. I grew up just with my mom raising me. John Wayne and Roy Rogers were sort of surrogate fathers to me. Westerns in those days were different. I haven't seen Brokeback Mountain. I'm not sure I will. I don't like way-out drama.

You're a rare show-biz Republican. If I found a Democrat I liked, I'd support him too. When President Bush was Governor of Texas, I felt he was a strong leader. And I felt he'd be a strong leader of the country. But I wouldn't want to be in his shoes for all the money in the world. A group in Texas tried to get me to run for Senator, but I've got more important things to do.

Like being an online cult hero. There are these weird but wildly popular sayings like "Chuck Norris can divide by zero." To say I'm surprised is an understatement. I take it as a compliment.

Do you even send e-mails? I told you, I'm from the Wild West. I write by hand.

By: Chu, Jeff, Time, 3/20/2006

Age of Dinosaurs

• The Age of Dinosaurs corresponds to the time that geologists call the Mesozoic Era, from about 248-65 million years ago (mya).

• The Mesozoic Era is divided into three shorter time spans: -- the Triassic, Jurassic, and Cretaceous Periods.

• In the Triassic Period, 248-208 mya, the dinosaurs began to evolve.

• During the Jurassic Period --about 208-144 mya--the dinosaurs reached their greatest size.

• The Cretaceous Period is when dinosaurs were at their most varied--about 144-65 mya.

• In the Triassic Period, all the continents were joined in one supercontinent--Pangaea.

• In the Jurassic Period, the supercontinent of Pangaea separated into two huge land-masses--Laurasia in the north and Gondwana in the south.

• In the Cretaceous Period, Laurasia and Gondwana split, and the continents as we know them began to form.

• In the Mesozoic Era, the major land-masses gradually moved across the globe in a process known as "continental drift."

• The joining and separating of the continents affected which kinds of dinosaurs lived where.

By: Parker, Steve, Dinosaurs

Legs and posture

• All dinosaurs had four limbs. Unlike certain other reptiles, such as snakes and slowworms, they did not lose their limbs through evolution.

• Some dinosaurs, such as massive, plant-eating sauropods like Janenschia, stood and walked on all four legs nearly all the time.

• The all-fours method of standing and walking is called "quadrupedal."

• Some dinosaurs, such as nimble, meat-eating dromaeosaurs like Deinonychus, stood and walked on their back limbs only. The front two limbs were used as arms.

• The back-limbs-only method of standing and walking is called "bipedal."

• Some dinosaurs, such as hadrosaurs like Edmontosaurus, could move on all four limbs or just on their back legs if they chose to.

• The two-or-four-legs method of standing and walking is called "bipedal/quadrupedal."

• Reptiles such as lizards and crocodiles have a sprawling posture, in which the upper legs join the body at the sides.

• Dinosaurs had an upright posture, with the legs directly below the body.

• The more efficient upright posture and gait may be one major reason why dinosaurs were so successful compared to other animals of the time.

By: Parker, Steve, Dinosaurs

Ancestors

• Experts have many opinions as to which group (or groups) of reptiles were the ancestors of the dinosaurs.

• The earliest dinosaurs appeared in the Middle Triassic Period, about 230-225 mya, so their ancestors must have been around before this.

• Very early dinosaurs walked and ran on their strong back limbs, so their ancestors were probably similar.

• The thecodonts or "socket-toothed" group of reptiles may have been the ancestors of the dinosaurs.

• A thecodont's teeth grew from roots fixed into pitted sockets in the jaw bone, as in dinosaurs.

• Some thecodonts resembled sturdy lizards. Others evolved into true crocodiles (still around today).

• The ornithosuchian thecodonts became small, upright creatures with long back legs and long tails.

• The smaller thecodonts included Euparkeria, at about 25in (60cm) long, and Lagosuchus, at about 1ft (30cm) long.

• Euparkeria and Lagosuchus were fast-moving creatures that used their sharp claws and teeth to catch insects.

STAR FACT
Creatures similar to Euparkeria or Lagosuchus may have given rise to the first dinosaurs.

By: Parker, Steve, Dinosaurs

Fabrosaurs

• Fabrosaurs were small dinosaurs that lived toward the beginning of the Jurassic Period, about 208-200 mya.

• The group was named from Fabrosaurus, a dinosaur that was itself named in 1964, from just the fossil of a piece of lower jaw bone, found in southern Africa.

• Lesothosaurus was a fabrosaur, the fossils of which were found in the Lesotho region of Africa, near the Fabrosaurus fossil It was named in 1978.

• The lightly built Lesothosaurus was only 3ft (1m) long from nose to tailend, and would have stood knee-high to an adult human.

• Lesothosaurus had long, slim back legs and long toes, indicating that it was a fast runner.

• The teeth and other fossils of Lesothosaurus show that it probably ate low-growing plants such as ferns.

• Lesothosaurus's teeth were set inward slightly from the sides of its skull, suggesting it had fleshy cheek pouches for storing or chewing food.

• Lesothosaurus may have crouched down to rest on its smaller front arms when feeding on the ground.

• Lesothosaurus probably lived in herds, grazing and browsing, and then racing away at speed from danger.

• Some experts believe that Lesothosaurus and Fabrosaurus were the same, and that the two sets of fossils were given different names.

By: Parker, Steve, Dinosaurs

Horns

• A dinosaur's horns got bigger as the animal grew--they were not shed and replaced each year like the antlers of today's deer.

• Each horn had a bony core and an outer covering of horny substance formed mainly from keratin.

• Horns were most common among the plant-eating dinosaurs. They were probably used for self-defense and to defend offspring against predators.

• The biggest horns belonged to the ceratopsians or "horn-faces," such as Triceratops.

• In some ceratopsians, just the bony core of the horn was about 3ft (1m) long, not including the outer sheath.

• The ceratopsian Styracosaurus or "spiked reptile" had a series of long horns around the top of its neck frill, and a very long horn on its nose.

• Horns may have been used in head-swinging displays to intimidate rivals and make physical fighting less likely.

• In battle, male dinosaurs may have locked horns in a trial of strength, as antelopes do today.

• Armored dinosaurs such as the nodosaur Panoplosaurus had horned spikes along the sides of its body.

STAR FACT
Dinosaurs may have used their horns to push over plants or dig up roots for food.

By: Parker, Steve, Dinosaurs

Prosauropods

• The prosauropods were the first really big dinosaurs to appear on Earth. They were plant-eaters that thrived about 230-180 mya.

• Prosauropods had small heads, long necks and tails, wide bodies, and four sturdy limbs.

• One of the first prosauropods was Plateosaurus, which lived about 220 mya in present-day France, Germany, Switzerland, and other parts of Europe.

• Plateosaurus usually walked on all fours, but it may have reared up on its back legs to reach high leaves.

• Plateosaurus was up to 26ft (8m) in total length, and weighed about 1 ton.

• Another prosauropod was Riojasaurus. Its fossils are 218 mya, and come from Argentina.

• Riojasaurus was 33ft (10m) long and weighed about 4,400lb (2 tons).

• Anchisaurus was one of the smallest prosauropods, at only 8ft (2.5m) long and about 66lb (30kg). It lived in eastern North America about 190 mya.

• Fossil evidence suggests that 16ft (5m) long Massospondylus lived in southern Africa and perhaps North America.

• The sauropods followed the prosauropods and were even bigger, but had the same basic body shape, with long necks and tails.

By: Parker, Steve, Dinosaurs

Tyrannosaurus

• Tyrannosaurus is not only one of the most famous of the dinosaurs, but also one about which a great deal is known. Several discoveries have revealed fossilized bones, teeth, whole skeletons, and other remains.

• Tyrannosaurus lived at the very end of the Age of Dinosaurs, about 68-65 mya. ~

• The full name of Tyrannosaurus is Tyrannosaurus rex, which means "king of the tyrant reptiles."

• The head of Tyrannosaurus was 3.9ft (1.2m) long and had more than 50 teeth, some longer than 6in (15cm).

• Tyrannosaurus fossils have been found at many sites in North America, including Alberta and Saskatchewan in Canada, and Colorado, Wyoming, Montana, and New Mexico in the U.S.A.

• The arms and hands of Tyrannosaurus were so small that they could not pass food to its mouth, and may have had no use at all.

• Recent fossil finds of a group of Tyrannosaurus, includes youngsters, suggesting that they may have lived as families in small herds.

• Tyrannosaurus may have been an active hunter, pounding along at speed after its fleeing prey, or it may have been a skulking scavenger that ambushed old and sickly victims.

• Until the 1990s, Tyrannosaurus was known as the biggest meat-eating dinosaur, and the biggest meat-eating animal ever to walk the Earth, but its size record has been broken by Giganotosaurus.

STAR FACT
Tyrannosaurus, when fully grown, was about 40-45 ft (12-13m) long and stood taller than a semi-truck.

By: Parker, Steve, Dinosaurs

Raptors

• "Raptors" is a nickname for the dromaeosaur group.

• "Raptor" is variously said to mean "plunderer," "thief," or "hunter" (birds of prey are also called raptors).

• Dromaeosaurs were medium-sized, powerful, agile, meat-eating dinosaurs that lived mainly about 110-65 mya.

• Most dromaeosaurs were 5-10ft (1.5-3m) long, weighed 45-130lb (20-60kg), and stood 3-6ft (1-2m) tall.

• Velociraptor lived 75-70 mya, in what is now the barren desert of Mongolia in Central Asia.

• Like other raptors, Velociraptor probably ran fast and could leap great distances on its powerful back legs.

• The dromaeosaurs are named after the 6ft (1.8m) long Dromaeosaurus from North America--one of the least known of the group, from very few fossil finds.

• The best-known raptor is probably Deinonychus.

• The large mouths of dromaeosaurs opened wide and were equipped with many small, sharp, curved teeth.

STAR FACT
On each foot, a dromaeosaur had a large, curved claw that it could swing in an arc to slash through its victim's flesh.

By: Parker, Steve, Dinosaurs

Tails

• All dinosaurs evolved with tails--though some individuals may have lost theirs in attacks or accidents!

• The length of the tail relative to the body, and its shape, thickness, and special features, give many clues as to how the dinosaur used it.

• The longest tails, at more than 55ft (17m), belonged to the giant plant-eating sauropods such as Diplodocus.

• Some sauropods had a linked chain of more than 80 separate bones inside the tail--more than twice the usual number.

• A sauropod may have used its tail as a whip to flick at enemies.

• Many meat-eating dinosaurs that stood and ran on their back legs had thick-based tails to counterbalance the weight of their bodies and heads.

• Small, fast, agile meat-eaters, such as Compsognathus, used their tails for balance when leaping and darting about.

• The meat-eater Ornitholestes had a tail that was more than half of its 6ft (2m) length, and was used as a counterbalance-rudder to help it turn corners quickly.

• The armored dinosaurs known as ankylosaurs had two huge lumps of bone at the ends of their tails, which they swung at their enemies like a club.

• The tails of the duckbilled dinosaurs (hadrosaurs) may have been swished from side to side in the water as an aid to swimming.

By: Parker, Steve, Dinosaurs

Gobi Desert

• The Gobi covers much of southern Mongolia and parts of northern China. During the Age of Dinosaurs, it was a land of scrub and scattered trees.

• The first fossil-hunting expeditions to the Gobi Desert took place in 1922-25, organized by the American Museum of Natural History.

• The 1922-25 Gobi expeditions set out to look for fossils of very early humans, but instead found some amazing dinosaur remains.

• The first fossil dinosaur eggs were found by the 1922-25 expeditions.

• Velociraptor, Avimimus, and Pinacosaurus were discovered in the Gobi.

• Russian fossil-hunting trips into the Gobi Desert in 1946 and 1948-49 discovered new types of armored dinosaurs, duckbilled dinosaurs, and the huge meat-eater Tarbosaurus.

• More expeditions to the Gobi in the 1960s-70s, especially to the fossil-rich area of the Nemegt Basin, found the giant sauropod Opisthocoelicaudia and the helmet headed Prenocephale.

• Other dinosaurs found in the Gobi include the ostrich-dinosaur Gallimimus and the strong-beaked "egg thief" Oviraptor.

• The Gobi can be -40Fahrenheit (-40Celsius) in winter and 104Fahrenheit (40Celsius) in summer.

• Despite the harsh conditions, the Gobi Desert is one of the most exciting areas in the world for finding dinosaur fossils.

By: Parker, Steve, Dinosaurs

Brachiosaurus

• Relatively complete fossil remains exist of Brachiosaurus.

• Brachiosaurus was a sauropod--a huge plant-eater.

• At 80ft (25m) long from nose to tail, Brachiosaurus was one of the biggest of all dinosaurs.

• Fossils of Brachiosaurus have been found in North America, East and North Africa, and also possibly southern Europe.

• Estimates of the weight of Brachiosaurus range from about 30-75 tons.

• Brachiosaurus lived about 150 mya, and may have survived until 115 mya.

• The name Brachiosaurus means "arm reptile"--it was named this because of its massive front legs.

• With its huge front legs and long neck, Brachiosaurus could reach food more than 43ft (13m) from the ground.

• The teeth of Brachiosaurus were small and chiseled for snipping leaves from trees.

• Brachiosaurus's nostrils were high on its head.



By: Parker, Steve, Dinosaurs

Names: 1.

• Every dinosaur has a scientific name, usually made up from Latin or Greek, and written in italics.

• Many dinosaur names end in -saurus, which some say means "reptile" and others say means "lizard"--even though dinosaurs were not lizards.

• Dinosaur names often refer to a feature that no other dinosaur had. Baryonyx, for example, means "heavy claw," from the massive claw on its thumb.

• The medium-sized meat-eater Herrerasaurus from Argentina was named after Victorino Herrera, the farmer who first noticed its fossils.

• Many dinosaur names are real tongue-twisters, such as Opisthocoelicaudia, pronounced "owe-pis-thowe-see-lee-cord-ee-ah."

• Opisthocoelicaudia means "posterior tail cavity," and refers to the joints between the backbones in the tail.

• Some dinosaurs were named after the place where their fossils were found. Minmi was located near Minmi Crossing in Queensland, Australia.

• Some dinosaur groups are named after the first-discovered or major one of its kind, such as the tyrannosaurs or stegosaurs.

• The fast-running ostrich-dinosaurs' name, ornithomimosaurs, means "bird-mimic reptiles."

STAR FACT Triceratops, or "three-horned face," is one of the best-known dinosaur scientific names.

By: Parker, Steve, Dinosaurs

Europe

• The first dinosaur fossils ever discovered and given official names were found in England.

• One of the first almost complete dinosaur skeletons, that of the big plant-eater Iguanodon, was found in 1871, in southern England.

• Some of the most numerous early fossils found were those of Iguanodon, discovered in a coal mine in the Belgian village of Bernissart in 1878.

• About 155-150 mya, Solnhofen in southern Germany was a mosaic of lush islands and shallow lagoons--ideal for many kinds of life.

• In sandstone in the Solnhofen region of Germany, fossils of amazing detail preserved the tiny Compsognathus and the first known bird, Archaeopteryx.

• Fossils of tiny Compsognathus were found near Nice in southern France.

• Many fossils of the plant-eating prosauropod Plateosaurus were recovered from Trossingen, Germany, in 1911-12, 1921-23, and 1932.

• Some of the largest fossil dinosaur eggs, measuring 1ft (30cm) long (five times longer than a hen's egg), were thought to have been laid by the sauropod Hypselosaurus near Aix-en-Provence in southern France.

• The Isle of Wight off southern England has provided so many dinosaur fossils that it is sometimes known as "Dinosaur Island."

• Fossils of Hypsilophodon have been found in eastern Spain, and those of Camptosaurus on the coast of Portugal.

By: Parker, Steve, Dinosaurs

Monsters

• Dinosaurs can be measured by length and height, but "biggest" usually means heaviest or bulkiest.

• Dinosaurs were not the biggest-ever living things on Earth--some trees are more than 100 times their size.

• The sauropod dinosaurs of the Late Jurassic were the biggest animals to walk on Earth, as far as we know.

• Sauropod dinosaurs may not have been the biggest animals ever. Today's great whales, and perhaps the massive, flippered sea reptiles called pliosaurs of the Dinosaur Age, rival them in size.

• For any dinosaur, enough fossils must be found for a panel of scientists to be sure it is a distinct type, so they can give it a scientific name. They must also be able to estimate its size. With some giant dinosaurs, not enough fossils have been found.

• Supersaurus remains found in Colorado, suggest a dinosaur similar to Diplodocus, but perhaps even longer, at 115ft (35m).

• Seismosaurus fossils found in 1991 in the U.S.A. may belong to a 130ft (40m) long sauropod.

• Ultrasaurus fossils found in South Korea suggest a dinosaur similar to Brachiosaurus, but smaller.

• Ultrasaurus fossils from the U.S.A. suggest a dinosaur similar to Brachiosaurus, but possibly even bigger.

• Argentinosaurus from South America may have weighed 100 tons or more.

By: Steve Parker, Dinosaurs

Hips

• All dinosaurs are classified in one of two large groups, according to the design and shape of their hip bones.

• One of the two large groups of dinosaurs is the Saurischia, meaning "reptile-hipped."

• In a saurischian dinosaur, the lower front pair of rod-shaped bones in the pelvis project down and forward.

• All meat-eating dinosaurs belonged to the Saurischia.

• The biggest dinosaurs, the plant-eating sauropods, belonged to the Saurischia.

• The second of the two groups of dinosaurs
is the Ornithischia, meaning "bird-hipped."

• In an ornithischian dinosaur, the lower front pair of rod-shaped bones in the pelvis, called the pubis bones, project down and backward, lying parallel with another pair, the ischium bones.

• All dinosaurs in the group Ornithischia, from small Heterodontosaurus to huge Triceratops, were plant-eaters.

• In addition to hips, there are other differences between the Saurischia and Ornithischia, such as an "extra" bone called the predentary at the front tip of the lower jaw in ornithischians.

STAR FACT
One way experts assign a dinosaur to a main group is by the structure of its hip bones.

By: Parker, Steve, Dinosaurs

Ostrich-dinosaurs

• "Ostrich-dinosaurs" is the common name of the ornithomimosaurs, because of their resemblance to today's largest bird--the flightless ostrich.

• Ostrich-dinosaurs were tall and slim, with two long, powerful back legs for very fast running.

• The front limbs of ostrich-dinosaurs were like strong arms, with grasping fingers tipped by sharp claws.

• The eyes of ostrich-dinosaurs were large and set high on the head.

• The toothless mouth of an ostrich-dinosaur was similar to the long, slim beak of a bird.

• Ostrich-dinosaurs lived toward the end of the Cretaceous Period, about 100-65 mya, in North America and Asia.

• Fossils of the ostrich-dinosaur Struthiomimus from Alberta, Canada, suggest it was almost 13ft (4m) in total length and stood about 7ft (2m) tall--the same height as a modern ostrich.

• The ostrich-dinosaur Gallimimus was almost 19ft (6m) long and stood nearly 10ft (3m) high.

• Ostrich-dinosaurs probably ate
seeds, fruits, and other plant material, as well as small animals such as worms and lizards, which they may have grasped with their powerful clawed hands.

• Other ostrich-dinosaurs included Dromiceiomimus, at 10-13ft (3-4m) long, and the slightly bigger Ornithomimus.

By: Parker, Steve, Dinosaurs

Sauropelta

• Sauropelta was a nodosaur--a type of armored dinosaur.

• The name Sauropelta means "shielded reptile," from the many large, conelike lumps of bone--some almost as big as dinner plates--on its head, neck, back, and tail.

• The larger lumps of bone on Sauropelta were interspersed with smaller, fist-sized bony studs.

• Sauropelta had a row of sharp spikes along each side of its body, from just behind the eyes to the tail. The spikes decreased in size toward the tail.

• Sauropelta was about 25ft (7.5m) long, including the tail, and its bulky body and heavy, bony armor meant it probably weighed almost 3 tons.

• The armor of Sauropelta was flexible, almost like lumps of metal set into thick leather, so the dinosaur could twist and turn, but was unable to run fast.

• Strong, sturdy, pillarlike legs supported Sauropelta's great weight.

• Sauropelta probably defended itself by crouching down to protect its softer belly, or swinging its head to jab at an enemy with its long neck spines.

• Using its beaklike mouth, Sauropelta probably plucked its low-growing plant food.

STAR FACT
Sauropelta lived 110-100 mya, in present-day Montana and Wyoming.

By: Parker, Steve, Dinosaurs

Formation

• Most of the information we know, or guess, about dinosaurs comes from fossils.

• Fossils are the remains of once-living things that have been preserved in rocks and turned to stone, usually over millions of years.

• Not just dinosaurs, but many kinds of living things from prehistoric times have left fossils, including mammals, birds, lizards, fish, insects, and plants such as ferns and trees.

• The flesh, guts, and other soft parts of a dead dinosaur's body were probably eaten by scavengers, or rotted away, and so rarely formed fossils.

• Fossils usually formed when a dinosaur's remains were quickly covered by sediments such as sand, silt, or mud, especially along the banks of a river or lake, or on the seashore.

• The sand or other sediment around a creature or plant's remains was gradually buried deeper by more sediment, squeezed under pressure, and cemented together into a solid mass of rock.

• As the sediment turned to rock, so did the plant or animal remains encased within it.

• Information about dinosaurs comes not only from fossils, but also from "trace" fossils. These were not actual parts of their bodies, but other items or signs of their presence.

• Trace fossils include egg shells, footprints, marks made by claws and teeth, and coprolites--fossilized dinosaur droppings.

STAR FACT By: Parker, Steve, Dinosaurs
The hard parts of a dinosaur's body were the most likely parts to form fossils, especially teeth, bones, claws, and horns.

By: Parker, Steve, Dinosaurs

Stegosaurus

• Stegosaurus was the largest of the stegosaurs group.

• Fossils of Stegosaurus were found mainly in present-day Colorado, Utah, and Wyoming.

• Stegosaurus, like most of its group, lived toward the end of the Jurassic Period, about 150 mya.

• The mighty Stegosaurus was about 26-29ft (8-9m) long and probably weighed more than 2 tons.

• The most striking feature of Stegosaurus were the large roughly triangular bony plates along its back.

• The name Stegosaurus means "roof reptile." It was given this name because it was first thought that its 32in (80cm) long bony plates lay flat on its back, overlapping slightly like the tiles on a roof.

• It is now thought that the back plates of Stegosaurus stood upright in two long rows.

• The back plates of Stegosaurus may have been for body temperature control, allowing the dinosaur to warm up quickly if it stood sideways to the sun's rays.

• Stegosaurus's back plates may have been covered with brightly colored skin, possibly to intimidate enemies--they were too flimsy for protection.

• Stegosaurus's tail was armed with large spikes, probably for swinging at enemies in self-defense.

By: Parker, Steve, Dinosaurs

Great meat-eaters

• The large meat-eating dinosaurs belonged to a general group known as the "carnosaurs."

• All carnosaurs were similar in body shape, and resembled the fearsome Tyrannosaurus.

• Tarbosaurus was very similar to Tyrannosaurus. It lived at the same time, 70-65 mya, but in Asia rather than North America.

• Some experts believe that Tarbosaurus was an Asian version of the North American Tyrannosaurus, and both should have been called Tyrannosaurus.

• The carnosaur Albertosaurus was about 26-29ft (8-9m) long, and lived 75-70 mya, in present-day Alberta, Canada.

• Spinosaurus was a huge carnosaur from North Africa, measuring 40ft (12m) long. It had tall bones on its back, which may have been covered with skin, like a "sail."

• Daspletosaurus was a 29ft (9m) long carnosaur that lived at the end of the Age of Dinosaurs in Alberta, Canada.

• Biggest of all the carnosaurs was Giganotosaurus, the largest meat-eater ever to walk the Earth.

• Giganotosaurus was up to 102ft (16m) long and weighed at least 8 tons.

STAR FACT
Giganotosaurus lived about 100 mya in today's Argentina, South America.

By: Parker, Steve, Dinosaurs

Claws

• Like reptiles today, dinosaurs had claws or similar hard structures at the ends of their digits (fingers and toes).

• Dinosaur claws were probably made from keratin--the same hard substance that formed their horns, and from which our own fingernails and toenails are made.

• Claw shapes and sizes relative to body size varied greatly between dinosaurs.

• In many meat-eating dinosaurs that ran on two back legs, the claws on the fingers were long and sharp, similar to a cat's claws.

• A small, meat-eating dinosaur such as Troodon probably used its finger claws for grabbing small mammals and lizards, and for scrabbling in the soil for insects and worms.

• Larger meat-eating dinosaurs such as Allosaurus may have used their hand claws to hold and slash their prey.

• Huge plant-eating sauropods such as Diplodocus had claws on its elephant-like feet that resembled nails or hooves.

• Many dinosaurs had five clawed digits on their feet, but some, such as Tyrannosaurus, had only three clawed toes on each foot to support their weight.

• Some of the largest dinosaur claws belonged to Deinocheirus--its massive finger claws were more than 14in (35cm)long.

• Deinocheirus was probably a gigantic ostrich-dinosaur that lived in the Late Cretaceous Period in Mongolia. Only parts of its fossil hands and arms have been found, so the rest of it remains a mystery.

By: Parker, Steve, Dinosaurs

Asia

• Hundreds of kinds of dinosaurs have been discovered on the continent of Asia.

• In Asia, most of the dinosaur fossils that have been found so far were located in the Gobi Desert, in Central Asia, and in present-day China. Some were also found in present-day India.

• Remains of the huge plant-eating sauropod Titanosaurus were uncovered near Umrer, in central India.

• Titanosaurus was about 40ft (12m) long and weighed 5-10 tons.

• Titanosaurus lived about 70 mya, and was very similar in shape to its close cousin of the same time, Saltasaurus, from South America.

• Fossils of the sauropod Barapasaurus were found in India. They date from the Early Jurassic Period, about 180 mya.

• Barapasaurus was 52ft (18m) long and probably weighed more than 20 tons.

• Fossils of the dinosaur Dravidosaurus, from the stegosaur group, were found near Tiruchirapalli in southern India.

• Dravidosaurus was about 10ft (3m) long. It lived much later than other stegosaurs, in the Late Cretaceous Period about 70 mya.

• Dravidosaurus had bony plates sticking up from its back, like Stegosaurus.

By: Parker, Steve, Dinosaurs

Coelophysis

• Coelophysis was a small, agile dinosaur that lived early in the Age of Dinosaurs, about 220 mya.

• A huge collection of fossils of Coelophysis was found in the late 1940s, at a place now known as Ghost Ranch, New Mexico.

• Hundreds of Coelophysis were preserved together at Ghost Ranch--possibly a herd that drowned as the result of a sudden flood.

• Coelophysis was almost 10ft (3m) in total length.

• The very slim, lightweight build of Coelophysis meant that it probably weighed only 55-62lb (25-28kg).

• Coelophysis belonged to the group of dinosaurs known as coelurosaurs. It probably ate small animals such as insects, worms, and lizards.

• Long, powerful back legs allowed Coelophysis to run fast.

• The front limbs of Coelophysis were like arms, each with a hand bearing three large, strong, sharp-clawed fingers for grabbing prey.

• Coelophysis means "hollow form." It was named this because some of its bones were hollow, like the bones of birds, making it lighter.

• Coelophysis had many small, sharp teeth in its narrow, birdlike skull.

By: Parker, Steve, Dinosaurs

Dinosaur fossil-hunters

• Many dinosaurs were found in the U.S.A. in the 1870s-90s by Othniel Charles Marsh and Edward Drinker Cope.

• Marsh and Cope were great rivals, each one trying to find bigger, better, and more dinosaur fossils than the other.

• The rivalry between Marsh and Cope extended to bribinge people to smash each other's fossils with hammers, planting fake fossils, and damaging food, water, and other supplies at each other's camps in the Midwest.

• Cope and Marsh found and described about 130 new kinds of dinosaurs between 1877 and 1897.

• Joseph Tyrrell discovered fossils of Albertosaurus in 1884, in what became a very famous dinosaur region, the Red Deer River area of Alberta, Canada.

• Lawrence Lambe found and described many North American dinosaur fossils, such as Centrosaurus in 1904.

• German fossil experts Werner Janensch and Edwin Hennig led expeditions to East Africa in 1908-12, and discovered Brachiosaurus and Kentrosaurus.

• From 1933 Yang Zhong-jiang (also called CC Young) led many fossil-hunting trips in various parts of China.

• José Bonaparte from Argentina has found many fossils in that region, including Carnotaurus in 1985.

STAR FACT
One of the first great fossil-hunters in the U.S. was Joseph Leidy, who found Troodon in 1856.

By: Parker, Steve, Dinosaurs

Size

• The biggest dinosaurs were the sauropods such as Brachiosaurus and Argentinosaurus--but working out how heavy they were when they were alive is very difficult.

• Brachiosaurus is known from many remains, including almost complete skeletons, so its length can be measured accurately.

• A dinosaur's weight is estimated from a scaled-down model of its skeleton "fleshed out" with muscles, guts, and skin on the bones, using similar reptiles such as crocodiles for comparison.

• The size of a dinosaur model is measured by immersing it in water to find its volume.

• The volume of a model dinosaur is scaled up to find the volume of the real dinosaur when it was alive.

• The sauropod Apatosaurus is now well known from about 12 skeletons, which between them have almost every bone in its body.

• Different experts have "fleshed out" the skeleton of patosaurus by different amounts, so estimates of its weight vary from 20 tons to more than 50 tons.

• The length of Apatosaurus is known accurately to have been 69ft (21m) in total.

• Fossils of a dinosaur called Brontosaurus were found to be identical to those of Apatosaurus, and since the name Apatosaurus had been given first, this was the name that had to be kept--so, officially, there is no dinosaur called Brontosaurus.

STAR FACT
The weights and volumes of reptiles alive today are used to calculate the probable weight of a dinosaur when it was alive.

By: Parker, Steve, Dinosaurs

Heterodontosaurus

• Heterodontosaurus[B] was a very small dinosaur at only 3.9ft (1.2m) in length (about as long as a large dog), and would have stood knee-high to a human.

• Heterodontosaurus lived about 205-195 mya, at the beginning of the Jurassic Period.

• Probably standing partly upright on its longer back legs, Heterodontosaurus would have been a fast runner.

• Fossils of Heterodontosaurus come from Lesotho in southern Africa and Cape Province in South Africa.

• Most dinosaurs had teeth of only one shape in their jaws, but Heterodontosaurus had three types of teeth.

• The front teeth of Heterodontosaurus were small, sharp, and found only in the upper jaw. They bit against the horny, beaklike lower front of the mouth.

• The four middle teeth of Heterodontosaurus were long and curved, similar to the tusks of a wild boar, and were perhaps used for fighting rivals or in self-defense.

• The back or cheek teeth of Heterodontosaurus were long and had sharp tops for chewing.

• Heterodontosaurus probably ate low-growing plants such as ferns.

STAR FACT
The name Heterodontosaurus means "different-toothed reptile."

By: Parker, Steve, Dinosaurs

Speed

• The fastest-running dinosaurs had long, slim, muscular legs, and small, lightweight bodies.

• "Ostrich-dinosaurs" were probably the speediest dinosaurs, perhaps the same speed as today's ostrich--45mph (70km/h).

• The main leg muscles of the ostrich-dinosaur Struthiomimus were in its hips and thighs.

• The hip and leg design of ostrich-dinosaurs meant that they could swing their limbs back and forth quickly, like those of a modern racehorse.

• Large, powerful, plant-eating dinosaurs such as the "duckbill" Edmontosaurus may have pounded along on their huge back legs at 25mph (40km/h).

• Plant-eaters such as Iguanodon and Muttaburrasaurus may have trotted along at 6-7mph (10-12km/h) for many hours.

• Some experts think that the great meat-eater Tyrannosaurus may have been able to run at 30mph (50km/h).

• Other experts think Tyrannosaurus was a relatively slow runner at 18mph (30km/h) (as fast as a human sprinter).

• The slowest dinosaurs were giant sauropods such as Brachiosaurus, which probably plodded at 2-4mph (4-6km/h) (about human walking speed).

• Today's fastest runner, the cheetah, would beat any dinosaur with its maximum burst of speed of more than 60mph (100km/h).

By: Parker, Steve, Dinosaurs

Allosaurus

• Allosaurus was a huge meat-eating dinosaur, almost as big as Tyrannosaurus.

• Allosaurus was about 36-39ft 11-12m) in total length.

• The weight of Allosaurus is variously estimated at 1.5-4 tons.

• The head of Allosaurus was almost 3ft (1m) long, but its skull was light, with large gaps or "windows" that would have been covered by muscle and skin.

• Allosaurus could not only open its jaws in a huge gape, but it could also flex them so that the whole mouth became wider, for an even bigger bite.

• Allosaurus lived about 155-135 mya, during the Late Jurassic and Early Cretaceous Periods.

• Most Allosaurus fossils come from the states in the Midwest.
• Allosaurus may have hunted the giant sauropod dinosaurs such as Diplodocus, Camarasaurus, and Brachiosaurus.

• Fossils of Allosaurus were identified in Africa, and a smaller or "dwarf" version was found in Australia.

STAR FACT
The remains of 60 Allosaurus were found in the Cleveland-Lloyd Dinosaurs Quarry, Utah.

By: Parker, Steve, Dinosaurs

Armor

• Many kinds of dinosaurs had protective "armor."

• Some armor took the form of bony plates, or osteoderms, embedded in the skin.

• A dinosaur with armor might weigh twice as much as a same-sized dinosaur without armor.

• Armored dinosaurs are divided into two main groups--the ankylosaurs and the nodosaurs.

• The large sauropod Saltasaurus had a kind of armor.

• Saltasaurus had hundreds of small, bony lumps, each as big as a pea, packed together in the skin of its back.

• On its back, Saltasaurus also had about 50 larger pieces of bone the size of a human hand.

• Saltasaurus is named after the Salta region of Argentina, where its fossils were found.

• Uruguay provided another site for Saltasaurus fossils.

• Saltasaurus was 40ft (12m) long and weighed about 3-4 tons.

By: Parker, Steve, Dinosaurs

Carnotaurus

• The big, powerful, meat-eating Carnotaurus is in the carnosaur group of dinosaurs.

• Carnotaurus fossils come mainly from the Chubut region of Argentina, South America.

• Carnotaurus lived about 100 mya.

• A medium-sized dinosaur, Carnotaurus was about 24.6ft (7.5m) in total length and weighed up to 1 ton.

• The skull of Carnotaurus was relatively tall from top to bottom and short from front to back, compared to other carnosaurs like Allosaurus and Tyrannosaurus, giving it a snub-snouted appearance.

• The name Carnotaurus means "meat-eating bull," referring partly to its bull-like face.

• Carnotaurus had two curious cone-shaped bony crests or "horns," one above each eye, where the horns of a modern bull would be.

• Rows of extra-large scales, like small lumps, ran along Carnotaurus from its head to its tail.

• Like Tyrannosaurus, Carnotaurus had very small front limbs that could not reach its mouth and may have had no use.

• Carnotaurus probably ate plant-eating dinosaurs such as Chubutisaurus, although its teeth and jaws were not especially big or strong.

By: Parker, Steve, Dinosaurs

Ankylosaurs

• Ankylosaurs had a protective armor of bony plates.

• Unlike the armored nodosaurs, ankylosaurs had a large lump of bone at the ends of their tails, which they used as a hammer or club.

• One of the best-known ankylosaurs, from the preserved remains of about 40 individuals, is Euoplocephalus.

• Euoplocephalus, or "well-armored head," had bony shields on its head and body, and even had bony eyelids. Blunt spikes ran along its back.

• The hefty Euoplocephalus was about 23ft (7m) long and weighed 2 tons or more.

• Euoplocephalus lived about 75-70 mya in Alberta, Canada and Montana.

• Specimens of Euoplocephalus are usually found singly, so it probably did not live in herds.

• The ankylosaur Pinacosaurus had bony nodules like chainmail armor in its skin, and rows of blunt spikes from neck to tail.

• Ankylosaurs had small, weak teeth, and probably ate soft, low-growing ferns and horsetails.

STAR FACT
Pinacosaurus was about 20ft (6m) long and lived in Asia some 80-75 mya.

By: Parker, Steve, Dinosaurs

Herbivores

• Hundreds of kinds of dinosaurs were herbivores, or plant-eaters. As time passed, the plants available for them to eat changed or evolved.

• Early in the Age of Dinosaurs, during the Triassic Period, the main plants for dinosaurs to eat were conifer trees, gingkoes, cycads, and the smaller seed-ferns, ferns, horsetails, and club-mosses.

• A few cycads are still found today. They resemble palm trees, with umbrella-like crowns of long green fronds on top of tall, unbranched, trunklike stems.

• In the Triassic Period, only prosauropod dinosaurs were big enough or had necks long enough to reach tall cycad fronds or gingko leaves.

• In the Jurassic Period, tall conifers such as redwoods and "monkey-puzzle" trees became common.

• The huge, long-necked sauropods of the Jurassic Period would have been able to reach high into tall conifer trees to rake off their needles.

• In the Middle Cretaceous Period, a new type of plant food appeared--the flowering plants.

• By the end of the Cretaceous Period there were many flowering trees and shrubs, such as magnolias, maples, and walnuts.

• No dinosaurs ate grass, because grasses did not appear on Earth until 30-20 mya, long after the dinosaurs had died out.

STAR FACT
Gingkoes are still found today in the form of the maidenhair tree, with fan-shaped leaves.

By: Parker, Steve, Dinosaurs

Triceratops

• Many fossil remains of Triceratops have been found. It is one of the most studied and best known dinosaurs.

• Triceratops was the largest of the plant-eating ceratopsians, or "horn-faced" dinosaurs.

• Triceratops lived at the very end of the Age of Dinosaurs, 67-65 mya.

• Fossils of 50 or so Triceratops have been found in North America, though no complete skeleton has been found.

• Triceratops was about 29ft (9m) long and weighed as much as the largest elephants of today.

• As well as a short nose horn and two long eyebrow horns, Triceratops also had a wide, sweeping frill that covered its neck like a curved plate.

• The neck frill of Triceratops may have been an anchor for the dinosaur's powerful chewing muscles.

• Acting as a shield, the bony neck frill of Triceratops may have protected it as it faced predators head-on.

• Triceratops' neck frill may have been brightly colored, to impress rivals or enemies.

• The beak-like front of Triceratops' mouth was toothless, but it had sharp teeth for chewing in its cheeks.

By: Parker, Steve, Dinosaurs

Earliest dinosaurs

• The first known dinosaurs appeared about 230-225 mya, in the Middle Triassic Period.

• The earliest dinosaurs were small-to-medium meat-eaters with sharp teeth and claws. They ran quickly on their two longer back legs.

• Fossils of Herrerasaurus date from 228 mya and were found near San Juan in Argentina, South America.

• Herrerasaurus was about 10ft (3m) in total length, and probably weighed some 200lb (90kg).

• At about the same time and in the same place as Herrerasaurus, there lived a similarly shaped dinosaur named Eoraptor, at only 5ft (1.5m) long.

• The name Eoraptor means "dawn plunderer" or "early thief."

• Staurikosaurus was a meat-eater similar to Herrerasaurus. It is known to have lived about the same time, in present-day Brazil, South America.

• Procompsognathus was another early meat-eater. It lived in the Late Triassic Period in Germany.

• Pisanosaurus lived in Argentina in the Late Triassic Period, and was only 3ft (1m) long. It may have been a plant-eater similar to Lesothosaurus.

STAR FACT
Eoraptor and Herrerasaurus hunted small animals such as lizards, insects, and mammal-like reptiles.

By: Parker, Steve, Dinosaurs

Smallest dinosaurs

• One of the smallest dinosaurs was Compsognathus, which lived during the Late Jurassic Period, 155-150 mya.

• Fossils of Compsognathus come from Europe, especially southern Germany and southeastern France.

• Compsognathus was slim, with a long, narrow tail. It probably weighed less than 7lb (3kg).

• Each hand of Compsognathus had two clawed fingers, and each foot had three long, clawed running toes, with another toe (the first or big toe) placed higher up in the "ankle" region.

• Compsognathus had small teeth that were sharp and curved. It probably darted through the undergrowth after insects, spiders, worms, and similar small prey.

• Two other very small dinosaurs were Heterodontosaurus and the 3ft (1m) long fabrosaur Lesothosaurus.

• The smallest fossil dinosaur specimens found to date are of Mussaurus, which means "mouse reptile."

• Mussaurus was a plant-eating prosauropod similar to Plateosaurus, which lived in the Late Triassic Period in South America.

• The fossils of Mussaurus measure just 8in (20cm) long--but these are the fossils of babies, just hatched from their eggs. The babies would have grown into adults measuring 10ft (3m) long.

STAR FACT
The little Compsognathus was only about 3ft (1m) long, and some speciment were even smaller, at 30in (70cm) long.

By: Parker, Steve, Dinosaurs

Africa

• The first major discoveries of dinosaur fossils in Africa were made from 1907, at Tendaguru in present-day Tanzania, East Africa.

• Discoveries at Tendaguru in East Africa included the giant sauropod Brachiosaurus, the smaller Dicraeosaurus, and the stegosaur-like Kentrosaurus.

• Remains of the massive sauropod Cetiosaurus were uncovered in Morocco, North Africa.

• Camarasaurus, a 20-ton plant-eater, is known from fossils found in Niger, as well as from European and North American fossils.

• Fossils of the huge, sail-backed meat-eater Spinosaurus come from Morocco and Egypt.

• The sail-backed plant-eater Ouranosaurus is known from remains found in Niger.

• Many sauropod fossils were uncovered at sites in Zimbabwe, including Barosaurus and Vulcanodon.

• Remains of the medium-sized plant-eating prosauropod Massospondylus were extracted from several sites in southern Africa.

• Fossils thought to belong to the small prosauropod Anchisaurus were found in southern Africa, the only site for this dinosaur outside North America.

• During the 1908-12 fossil-hunting expedition to Tendaguru, more than 250 tons of fossil bones and rocks were carried by people for 40mi (65km) to the nearest port, for transport to Germany.

By: Parker, Steve, Dinosaurs

Mamenchisaurus

• Mamenchisaurus was a massive plant-eating dinosaur, a sauropod similar in appearance to Diplodocus.

• The huge Mamenchisaurus measured about 82ft (25m) from nose to tailend.

• The weight of Mamenchisaurus has been estimated at 20-35 tons.

• Mamenchisaurus lived during the late Jurassic Period, from 160 to perhaps 140 mya.

• The hugely long neck of Mamenchisaurus had up to 19 vertebrae, or neckbones--more than almost any other dinosaur.

• Mamenchisaurus fossils were found in China.

• The name Mamenchisaurus is taken from the place where its fossils were discovered--Mamen Stream.

• Mamenchisaurus may be a close cousin of other sauropod dinosaurs found in the region, including Euhelopus and Omeisaurus.

• Mamenchisaurus may have stretched its vast neck high into trees to crop leaves, or--less likely--it may have lived in swamps and eaten soft water plants.

• Mamenchisaurus had the longest neck, at up to 50ft (15m), of any dinosaur yet discovered.

Deinonychus

• Deinonychus is one of the best-known members from the group of meat-eaters known as raptors.

• The Middle Cretaceous Period, about 115-100 mya, is when Deinonychus thrived.

• Fossils of Deinonychus come from the Midwest, mainly from Montana and Wyoming.

• Deinonychus was about 10ft (3m) long and weighed 130-155lb (60-70kg), about the same as an adult human.

• When remains of Deinonychus were dug up and studied in the 1960s, they exploded the myth that dinosaurs were slow, small-brained, and stupid.

• Powerful, speedy, and agile, Deinonychus may have hunted in packs, like today's lions and wolves.

• Deinonychus had large hands with three powerful fingers, each tipped with a dangerous sharp claw.

• On each foot, Deinonychus had a massive, scythelike claw that it could flick in an arc to slice open prey.

• The tail of Deinonychus was stiff and could not be swished.

• Deinonychus and other similar dromaeosaurs, such as Velociraptor, were the basis for the cunning and terrifying raptors of the Jurassic Park films.

By: Parker, Steve, Dinosaurs

Myths

• Dinosaurs were the only animals alive during the Age of Dinosaurs--false, there were many kinds of creatures, from worms, insects, and fish to other kinds of reptiles.

• Dinosaurs flew in the air --false, although other reptiles called pterosaurs did fly.

• Dinosaurs lived in the sea --false, although other reptiles such as ichthyosaurs and plesiosaurs did.

• Mammals appeared on Earth after the dinosaurs died out--false. Small mammals lived all through the Age of Dinosaurs.

• A single kind of dinosaur survived all through the Age of Dinosaurs--false. A few kinds may have lived for 10, 20 or even 30 million years, but none came close to 160 million years.

• Dinosaurs were huge lizards --false. Dinosaurs were reptiles, but not members of the lizard group.

• Dinosaurs gave birth to babies --false. As far as we know, dinosaurs laid eggs.

• All dinosaurs were green --false, probably.

• Dinosaurs live on today --false ... ... unless you've found one!

STAR FACT
Dinosaurs and humans fought each other--false. The last dinosaurs died out more than 60 million years before humans appeared.

By: Parker, Steve, Dinosaurs

Reconstructions

• No complete fossilized dinosaur, with all its skin, muscles, guts, and other soft parts, has yet been found.

• Most dinosaurs are reconstructed from the fossils of their hard parts--chiefly teeth, bones, horns, and claws.

• The vast majority of dinosaurs are known from only a few fossil parts, such as several fragments of bones.

• Fossil parts of other, similar dinosaurs are often used in reconstructions to "fill in" missing bones, teeth, and even missing heads, limbs, or tails.

• Soft body parts from modern reptiles such as lizards are used as a guide for the reconstruction of a dinosaur's muscles and guts, which are added to the fossils.

• On rare occasions, remains are found of a dinosaur body that dried out rapidly so that quite a few parts were preserved as mummified fossils.

• One of the best-known, part-mummified dinosaur fossils is "Sue," a specimen of Tyrannosaurus found in 1990 in South Dakota.

• "Sue" is the biggest and most complete preserved Tyrannosaurus ever found.

• "Sue" was a female Tyrannosaurus. It was named after its discoverer, fossil-hunter Susan Hendrickson of the Black Hills Institute of Geological Research.

STAR FACT
"Sue," the part-mummified Tyrannosaurus, as sold in 1997 for more than $8.3 million to the Field Museum, Chicago.

By: Parker, Steve, Dinosaurs

Male and female

• In many living reptiles, females are larger than males.

• In dinosaur fossils, the shapes of the hip bones and head crests can indicate if the creatures were male or female.

• Head crest fossils of different sizes and proportions belonging to the hadrosaur (duckbilled dinosaur) Lambeosaurus have been found.

• Some Lambeosaurus had short, rounded main crests with small, spikelike spurs pointing up and back.

• Other Lambeosaurus had a large, angular main crest with a large spur pointing up and back.

• The head crest differences in Lambeosaurus fossils may indicate that males and females looked different.

• Remains of the hadrosaur Corythosaurus show two main sizes of head crest, perhaps one belonging to females and the other to males.

• New studies in the variations of head crests led to more than eight different species of dinosaurs being reclassified as one species of Corythosaurus.

• In dinosaurs and other animals, differences between the sexes--either in size or specific features--is known as sexual dimorphism.

STAR FACT
In Parasaurolophus specimens, some head crest were twice as long as other--probably a male--female difference.

By: Parker, Steve, Dinosaurs

Herds

• When the fossils of many individuals of the same type are found together, there are various possible causes.

• One reason why individuals of the same dinosaur type are found preserved together is because their bodies were swept to the same place by a flood.

• A group of individuals of the same type may have died in the same place if they had lived there as a group.

• There is much evidence that various dinosaur types lived in groups or herds, examples being Diplodocus, Triceratops, and Iguanodon.

• Some fossil groups include dinosaurs of different ages, from newly hatched babies to youngsters and adults.

• Fossil footprints suggest some dinosaurs lived in herds.

• Footprints of a plant-eating dinosaur were found with the prints of a meat-eater to one side of them--perhaps evidence of a hunter pursuing its victim.

• Sometimes the footprints of many dinosaurs of the same type are found together, suggesting a herd.

• Sometimes larger footprints are found to the sides of smaller ones, possibly indicating that adults guarded their young between them.

STAR FACT
At Peace River Canyon, British Columbia, Canada, some 1,700 footprints were found.

By: Parker, Steve, Dinosaurs

Stegosaurs

• Stegosaurs were a group of plant-eating dinosaurs that lived mainly during the Late Jurassic Period, 160-140 mya.

• Stegosaurs are named after the best-known of their group, Stegosaurus.

• Stegosaurs are often called "plated dinosaurs," from the large, flat plates or slabs of bone on their backs.

• Stegosaurs probably first appeared in eastern Asia, then spread to other continents, especially North America and Africa.

• The stegosaur Kentrosaurus was about 16ft (5m) long and weighed an estimated 1 ton.

• The name Kentrosaurus means "spiky reptile."

• Kentrosaurus lived about 155-150 mya in East Africa.

• Most stegosaurs had no teeth at the fronts of their mouths, but had horny beaks, like those of birds, for snipping off leaves.

• Most stegosaurs chewed their food with small, ridged cheek teeth.

Cousins: Air

• Many flying creatures lived during the Age of Dinosaurs, especially insects such as flies and dragonflies, and also birds.

• The main flying reptiles during the Age of Dinosaurs were the pterosaurs, or "winged reptiles."

• Hundreds of different kinds of pterosaurs came and went through almost the entire Age of Dinosaurs, about 220-65 mya.

• The arms of a pterosaur resembled wings--a light, thin, stretchy wing membrane was held out mainly by the finger bones, especially the fourth finger.

• Pterosaurs are sometimes called pterodactyls, but Pterodactylus was just one kind of pterosaur.

• Pterodactylus had a wing span of 3-7ft (1-2m). It lived 150-140 mya in southern Germany.

• Some pterosaurs, such as Pterodactylus, had very short tails, or no tail at all.

• The pterosaur Rhamphorhynchus had a long, trailing tail with a widened, paddle-shaped end.

• Fossils suggest that some pterosaurs, such as Sordes, had fur, and may have been warm-blooded, agile fliers rather than slow, clumsy gliders.

• The biggest pterosaur, and the largest flying animal ever, was Quetzalcoatlus. Its "beak" was longer than a human, and its wings were almost 40ft (12m) across.

By: Parker, Steve, Dinosaurs

Noses

• Dinosaurs breathed through their mouths and/or noses, like many other creatures today.

• Fossil dinosaur skulls show that there were two nose openings, called nares, in the bone.

• A dinosaur's two nasal openings, or nares, led to nasal chambers inside the skull, where the smell organs were located.

• Some meat-eaters, especially carnosaurs such as Allosaurus and Tyrannosaurus, had very large nasal chambers and probably had an excellent sense of smell.

• In most dinosaurs the nasal openings were at the front of the snout, just above the upper jaw.

• In some dinosaurs, especially sauropods such as Mamenchisaurus and Brachiosaurus, the nasal openings were higher on the skull, between the eyes.

• Fossils show that air passages led from the nasal chambers rearward into the head for breathing.

• The nasal openings in a dinosaur's skull bone led to external openings, or nostrils, in the skin.

• New evidence from animals alive today suggests that a dinosaur's nostrils would have been lower down than the nares (the openings in the skull bone), toward the front of the snout.

STAR FACT
In hadrosaurs, the nasal passages inside the head crests were more than 3ft (1m) long.

By: Parker, Steve, Dinosaurs

Nests and eggs

• There are hundreds of discoveries of fossil dinosaur eggs and nests, found with the parent dinosaurs.

• Eggs and nests are known of the pig-sized plant-eater Protoceratops, an early kind of horned dinosaur.

• Many Protoceratops' nests were found in a small area, showing that these dinosaurs bred in colonies.

• Protoceratops' nests were shallow, bowl-shaped pits about 3ft (1m) across, scraped in the dry, sandy earth and surrounded by low walls.

• At the Protoceratops site, it was discovered that new nests had been made on top of old ones, showing that the colony was used again year after year.

• The female Protoceratops laid a clutch of 20 or so tough-shelled, sausage-shaped eggs.

• Protoceratops' eggs were probably covered with earth and incubated by the heat of the sun.

• Nests and eggs of the small plant-eater Orodromeus have been found in Montana.

• In each nest about 20 Orodromeus eggs were arranged neatly in a spiral, starting with one in the center and working outward.

• Protoceratops arranged its eggs neatly in its nest, in a circle or spiral shape resembling the spokes of a wheel.

Names: 2

• More than 100 kinds of dinosaurs have been named after the people who first discovered their fossils, dug them up, or reconstructed the dinosaur.

• The very large duckbill (hadrosaur) Lambeosaurus was named after Canadian fossil expert Lawrence Lambe.

• Lawrence Lambe worked mainly during the early 1900s, and named one of his finds Stephanosaurus.

• In the 1920s, Stephanosaurus was restudied and renamed, along with Didanodon, as Lambeosaurus, in honor of Lambe's great work.

• The full name of the "heavy-claw" meat-eater Baryonyx is Baryonyx walkeri, after Bill Walker, the discoverer of its massive claw.

• Part-time fossil-hunter Bill Walker found the claw of Baryonyx in a clay pit quarry in Surrey, England.

• Some dinosaur names are quite technical, such as Diplodocus, which means "double beam"--it was named for its tail bones, which have two long projections like a pair of skis.

• The 13ft (4m) long plant-eater Othnielia, related to Hypsilophodon, was named after the late 19th-century American fossil-hunter Othniel Charles Marsh.

• Parksosaurus, a 8.2ft (2.5m) long plant-eater related to Hypsilophodon, was named in honor of Canadian dinosaur expert William Parks.

STAR FACT
Australian Leaellynasaura was named after Lea Ellyn, the daughter of its discoverers.

By: Parker, Steve, Dinosaurs

Diplodocus

• Diplodocus was a huge plant-eating dinosaur belonging to the group known as the sauropods.

• Diplodocus lived during the Late Jurassic Period, about 155-145 mya.

• The first discovery of Diplodocus fossils was in 1877, near Canyon City, Colorado.

• The main fossils of Diplodocus were found in the Midwest namely in Colorado, Utah, and Wyoming.

• At an incredible 89ft (27m) or more in length, Diplodocus is one of the longest dinosaurs known.

• Although so long, Diplodocus was quite lightly built--it probably weighed "only" 10-12 tons!

• Diplodocus probably swung its tiny head on its enormous neck to reach fronds and foliage in the trees.

• The teeth of Diplodocus were slim rods that formed a comblike fringe only around the front of its mouth.

• Diplodocus may have used its comblike teeth to strip leaves from twigs and swallow them without chewing.

• Diplodocus's nostrils were so high on its skull (almost above its eyes) that experts once thought it had a trunk like an elephant's.

By: Parker, Steve, Dinosaurs

Colors

• No one knows for certain what colors dinosaurs were.

• There are several good fossil specimens of dinosaur skin, but all of them are stone colored, because fossils are living things that have turned to stone.

• Some experts believe that dinosaurs were similar in color to crocodiles--dull greens and browns.

• Dinosaurs that were dull greens and browns would have been well-camouflaged among trees, rocks, and earth.

• According to some experts, certain dinosaurs may have been bright yellow, red, or blue, and possibly striped or patched, like some of today's lizards and snakes.

• Some dinosaurs may have been brightly colored to frighten off predators or to intimidate rivals at breeding time.

• The tall "sails" of skin on the backs of the plant-eater Ouranosaurus and the meat-eater Spinosaurus may have been for visual display, as well as for (or instead of) temperature control.

• The large, bony back plates on stegosaurs may have been used for colorful displays to rivals.

• The large neck frills of horned dinosaurs such as Triceratops were possibly very colorful and used for display.

• Recent finds of dinosaur skin and scales with microscopic ridges and patterns on their surface may show how the scales reflected light, and so what color they would have appeared.

By: Parker, Steve, Dinosaurs

Ornitholestes

• Ornitholestes was a smallish meat-eating dinosaur in the group known as coelurosaurs.

• The name Ornitholestes means "bird robber"--experts who studied its fossils in the early 1900s imagined it chasing and killing the earliest birds.

• Ornitholestes lived about 150 mya, at the same time as the first birds.

• Present-day Wyoming, was the home of Ornitholestes, a continent away from the earliest birds in Europe.

• Only one specimen of Ornitholestes has been found, along with parts of a hand at another site.

• Ornitholestes was about 7ft (2m) long from nose to tailend.

• Slim and lightweight, Ornitholestes probably weighed only about 26-33lb (12-15kg).

• The teeth of Ornitholestes were small and well-spaced, but also slim and sharp, well suited to grabbing small animals for food.

• Ornitholestes had very strong arms and hands, and powerful fingers with long claws, ideal for grabbing baby dinosaurs newly hatched from their eggs.

STAR FACT
According to some experts, Ornitholestes may have had a slight ridge or crest on its nose. Other experts disagree.

By: Parker, Steve, Dinosaurs

Duckbills

• "Duckbills" is the common name for the group of dinosaurs called hadrosaurs.

• Hadrosaurs were big plant-eaters that walked mainly on their two large, powerful rear legs.

• Hadrosaurs were one of the last main dinosaur groups to appear on Earth, less than 100 mya.

• Hadrosaurs were named after Hadrosaurus, the first dinosaur of the group to be discovered as fossils, found in 1858 in New Jersey.

• Most hadrosaurs had wide mouths that were flattened and toothless at the front, like a duck's beak.

• Huge numbers of cheek teeth filled the back of the hadrosaur's mouth, arranged in rows called batteries. They were ideal for chewing tough plant food.

• Some hadrosaurs had tall, elaborate crests or projections of bone on their heads, notably Corythosaurus, Tsintaosaurus, Saurolophus, and Parasaurolophus.

• Hadrosaurs that lacked bony crests and had low, smooth heads included Anatosaurus, Bactrosaurus, Kritosaurus, and Edmontosaurus.

• The name Hadrosaurus means "big reptile."

STAR FACT
Edmontosaurus may have had a loose bag of skin on its nose that it blew up like a balloon to make a honking or trumpeting noise--perhaps a breeding call.

By: Parker, Steve, Dinosaurs

Warm or cold blood?

• If dinosaurs were cold-blooded and obtained heat only from their surroundings, like reptiles today, they would have been slow or inactive in cold conditions.

• If dinosaurs were warm-blooded, like birds and mammals today, they would have been able to stay warm and active in cold conditions.

• Some time ago experts believed that all dinosaurs were cold-blooded, but today there is much disagreement.

• One type of evidence for warm-bloodedness comes from the detailed structure of the insides of very well-preserved fossil bones.

• The inside structure of some fossil dinosaur bones is more like that of warm-blooded creatures than reptiles.

• Certain small, meat-eating dinosaurs may have evolved into birds, and since birds are warm-blooded, these dinosaurs may have been, too.

• In a "snapshot" count of dinosaur fossils, the number of predators compared to prey is more like that in mammals than in reptiles.

• Some dinosaurs were thought to live in herds and raise families, as many birds and mammals do today. In reptiles, such behavior is rare.

• Most dinosaurs stood upright on straight legs, a posture common to warm-blooded creatures, but not to other, cold-blooded reptiles.

• If dinosaurs had been warm-blooded, they would probably have needed to eat at least ten times more food than if they were cold-blooded, to "burn" food energy and make heat.

By: Parker, Steve, Dinosaurs

Pachycephalosaurs

• The pachycephalosaurs are named after one of the best-known members of the group, Pachycephalosaurus.

• Pachycephalosaurus means "thick-headed reptile," due to the domed and hugely thickened bone on the top of its skull--like a cyclist's crash helmet.

• Pachycephalosaurs were one of the last dinosaur groups to thrive. They lived 75-65 mya.

• Pachycephalosaurs were plant-eaters that stood up and ran on their longer back legs.

• Pachycephalosaurus was about 14.8ft (4.5m) long from nose to tail, and lived in the Midwest.

• Stegoceras, also from the Midwest, was about 8.2ft (2.5m) long with a body the size of a goat.

• Homalocephale, another pachycephalosaur, was about 10ft (3m) long and had a flatter skull. It lived in east Asia.

• Pachycephalosaurs may have defended themselves by lowering their heads and charging at their enemies.

• At breeding time, the males may have engaged in head-butting contests, as some sheep and goats do today.

STAR FACT
Pachycephalosaurs are oftern known as the "bone-heads" or "helmet-heads."

By: Parker, Steve, Dinosaurs

Baryonyx

• Baryonyx was a large meat-eating dinosaur that lived about 120 mya.

• The first fossil find of Baryonyx was its huge thumb claw, discovered in Surrey, England, in 1983.

• The total length of Baryonyx was 33-36ft (10-11m).

• Baryonyx had a slim shape and long, narrow tail, and probably weighed less than 2 tons.

• The head of Baryonyx was unusual for a meat-eating dinosaur in having a very long, narrow snout, similar to today's slim-snouted crocodiles.

• The teeth of Baryonyx were long and slim, especially at the front of its mouth.

• The general similarities between Baryonyx and a crocodile suggest that Baryonyx may have been a fish-eater.

• Baryonyx may have lurked in swamps or close to rivers, darting its head forward on its long, flexible neck to snatch fish.

• The massive thumb claw of Baryonyx may have been used to hook fish or amphibians from the water.

• The long thumb claw of Baryonyx measured about 14in (35cm)in length.

By: Parker, Steve, Dinosaurs

Footprints

• Thousands of fossilized dinosaur footprints have been found all over the world.

• Some dinosaurs left footprints when they walked on the soft mud or sand of riverbanks. Then the mud baked hard in the sun, and was covered by more sand or mud, which helped preserve the footprints as fossils.

• Some fossil footprints were made when dinosaur feet left impressions in soft mud or sand that was then covered by volcanic ash, which set hard.

• Many footprints have been found together in lines, called "trackways." These suggest that some dinosaurs lived in groups, or used the same routes regularly.

• The distance between same-sized footprints indicates whether a dinosaur was walking, trotting, or running.

• Footprints of big meat-eaters such as Tyrannosaurus show three toes with claws, on a forward-facing foot.

• In big plant-eaters such as Iguanodon, each footprint shows three separate toes, but less or no claw impressions, and the feet point slightly inward.

• In giant plant-eating sauropods, each footprint is rounded and has indentations of nail-like "hooves."

• Some sauropod footprints are more than 3ft (1m) across.

STAR FACT
Hadrosaur footprints 53in (135cm) long were found near Salt Lake City, Utah.

By: Parker, Steve, Dinosaurs

Archosaurs

• Archosaurs were a very large group of reptiles that included the dinosaurs as one of their subgroups.

• Other archosaur subgroups included thecodonts, flying reptiles called pterosaurs, and crocodiles.

• The thecodonts included a smaller reptile group, the ornithosuchians--possibly the dinosaurs' ancestors.

• One of the most dinosaur-like of the archosaurs was the thecodont Ornithosuchus.

• The 13ft (4m) long Ornithosuchus stood almost upright.

• Ornithosuchus fossils were found in Scotland.

• Sharp-toothed Ornithosuchus was probably a powerful predator.

• Features in Ornithosuchus's backbone, hips, and feet indicate that it was almost certainly not a dinosaur.

• The archosaur Longisquama was a lizard-like reptile only 6in (15cm) long, with tall scales forming a V-shaped row along its back.

• Archosaur means "ruling reptile," and archosaurs did indeed rule the land, swamps, and skies for over 170 million years.

Teeth

• Some of most common fossil remains of dinosaurs are their teeth--the hardest parts of their bodies.

• Dinosaur teeth come in a huge range of sizes and shapes--daggers, knives, shears, pegs, combs, rakes, filelike rasps, crushing batteries, and vices.

• In some dinosaurs, up to three-quarters of a tooth was fixed into the jaw bone, so only one-quarter showed.

• The teeth of plant-eaters such as Iguanodon had angled tops that rubbed past each other in a grinding motion.

• Some duckbill dinosaurs (hadrosaurs) had more than 1,000 teeth, all at the back of the mouth.

• Like modern reptiles, dinosaurs probably grew new teeth to replace old, worn, or broken ones.

• Individual teeth were replaced at different times.

• Some of the largest teeth of any dinosaur belonged to Daspletosaurus, a tyrannosaur-like meat-eater.

• Some of Daspletosaurus's teeth were 7in (18cm) long.

STAR FACT
Troodon, or "wonding tooth," was named on the evidence of just one or two teeth.



By: Parker, Steve, Dinosaurs

Plateosaurus

• Plateosaurus, a prosauropod, was one of the first really big dinosaurs to appear, some 220 mya.

• The name Plateosaurus means "flat reptile."

• Groups of Plateosaurus have been found at various sites, including one in Germany and one in France.

• Plateosaurus used its many small, serrated teeth to crop and chew plant food.

• Plateosaurus had very flexible, clawed fingers, which it perhaps used to pull branches of food to its mouth.

• Plateosaurus could bend its fingers "backward," allowing it to walk on its hands and fingers, in the same posture as its feet and toes.

• Plateosaurus's thumbs had especially large, sharp claws, perhaps used as weapons to jab and stab enemies.

• Fossil experts once thought that Plateosaurus dragged its tail as it walked.

• Experts today suggest that Plateosaurus carried its tail off the ground, to act as a balance to its head, long neck, and the front part of its body.

• Plateosaurus one of the earliest dinosaurs to be officially named, in 1837, even before the term "dinosaur" had been invented.

By: Parker, Steve, Dinosaurs

Growth and age

• No one knows for sure how fast dinosaurs grew, how long they took to reach full size, or how long they lived.

• Most estimates of dinosaur growth rates and ages come from comparisons with today's reptiles.

• Some reptiles today continue to grow throughout their lives, although their growth rate slows with age.

• Dinosaurs may have grown fast as youngsters and slower as adults, never quite stopping until they died.

• Estimates for the age of a full-grown meat-eater such as Tyrannosaurus range from 20 to more than 50 years.

• Full-grown, small meat-eaters such as Compsognathus may have lived to be only 3-10 years old.

• A giant sauropod probably lived to be 50 years old, or even over 100 years old.

• Like many reptiles today, a dinosaur's growth rate probably depended largely on its food supply.

• Dinosaurs probably ate a lot and grew fast when food was plentiful, and slowed down when food was scarce.

• During its lifetime, a big sauropod such as Brachiosaurus would have increased its weight 2,000 times (compared to 20 times in a human).

By: Parker, Steve, Dinosaurs

Cousins: Land

• Land animals during the Age of Dinosaurs included insects, spiders, other reptiles, birds, and mammals.

• Dinosaurs had many large, fierce, reptile enemies.

• One of the biggest non-dinosaur land reptiles was Deinosuchus (or Phobosuchus), a type of crocodile.

• Deinosuchus lived in the Late Cretaceous Period, in present-day Texas.

• The fossil skull of Deinosuchus measures about 6ft (2m) long, much bigger than any crocodile of today.

• The first mammals appeared on Earth at about the same time as the early dinosaurs.

• Various kinds of mammals survived all through the Age of Dinosaurs, although none grew larger than a pet cat.

• One of the first mammals known from fossils is Megazostrodon, which resembled a shrew of today.

• Megazostrodon was just 5in (12cm) long and its fossils, from 220-210 mya, come from southern Africa.

• If Deinosuchus's body was in proportion to its skull, it would have been 50ft (15m) long!

By: Parker, Steve, Dinosaurs

Anchisaurus

• Anchisaurus was a prosauropod, a plant-eater with a small head, long neck, and long tail.

• Although officially named as a dinosaur in 1912, Anchisaurus had in fact been discovered almost 100 years earlier.

• Anchisaurus was very small and slim compared to other prosauropods, with a body about the size of a large dog.

• Fossils of Anchisaurus date from the Early Jurassic times.

• The remains of Anchisaurus were found in Connecticut and Massachusetts, eastern U.S.A., and in southern Africa.

• With its small, serrated teeth, Anchisaurus probably bit off the soft leaves of low-growing plants.

• To reach leaves on higher branches, Anchisaurus may have been able to rear up on its back legs.

• Anchisaurus had a large, curved claw on each thumb.

• The thumb claws of Anchisaurus may have been used as hooks to pull leafy branches toward the mouth, and/or as weapons for lashing out at enemies and inflicting wounds.

STAR FACT
Remains of Anchisaurus were the first fossils of a dinosaur to be discovered in North America in 1818

By: Parker, Steve, Dinosaurs

Cousins: Sea

• Placodont reptiles lived mainly during the Triassic Period. They were shaped like large salamanders or turtles, and probably ate shellfish.

• The placodont Placodus was about 7ft (2m) long and looked like a large, scaly newt.

• The nothosaurs were fish-eating reptiles of the Triassic Period. They had small heads, long necks and tails, and four flipper-shaped limbs.

• Fossils of the 10ft (3m) long nothosaur Nothosaurus have been found across Europe, Asia, and Africa.

• The dolphin-like ichthyosaur reptiles had back fins, two-lobed tails, and flipper-shaped limbs.

• Many kinds of ichthyosaurs thrived in the seas during the Triassic and Jurassic Periods, although they had faded away by the middle of the Cretaceous Period.

• One of the biggest ichthyosaurs was Shonisaurus, which measured up to 50ft (15m) long.

• The plesiosaurs were fish-eating reptiles of the Mesozoic Era, with small heads, tubby bodies, four flipper-shaped limbs, and short, tapering tails.

• The plesiosaur Elasmosaurus was up to 45ft (14m) long, with more than half of this length being its extraordinarily long, snakelike neck.

STAR FACT
One of the biggest meat-eaters ever was the short-necked plesiosaur Liopleurodon, at possibly 65ft (20m) long.

By: Parker, Steve, Dinosaurs

Dino-birds: 1

• The earliest known bird for which there is good fossil evidence, and which lived during the Age of Dinosaurs, is Archaeopteryx.

• Archaeopteryx lived in Europe during the Late Jurassic Period, about 155-150 mya.

• At about 24in (60cm) long from nose to tailend, Archaeopteryx was about the size of a large crow.

• Archaeopteryx resembled a small, meat-eating dinosaur in many of its features, such as the teeth in its long, beaklike mouth, and its long, bony tail.

• In 1951, a fossilized part-skeleton was identified as belonging to a small dinosaur similar to Compsognathus, but in the 1970s it was restudied and named Archaeopteryx--showing how similar the two creatures were.

• Three clawed fingers grew halfway along the front of each of Archaeopteryx's wing-shaped front limbs.

• The flying muscles of Archaeopteryx were anchored to its large breastbone.

• Archaeopteryx probably flew, but not as fast or as skilfully as today's birds.

• Archaeopteryx probably fed by swooping on prey, running to catch small creatures such as insects and worms, or perhaps even by scavenging carrion.

STAR FACT
Archaeopteryx was covered with feathers that had the same detailed designs found in feathers covering flying birds today.

By: Parker, Steve, Dinosaurs

Skin

• Several fossils of dinosaur skin have been found, revealing that dinosaurs had scales, like today's reptiles.

• As in crocodiles, the scales of a dinosaur were embedded in its thick, tough, leathery hide, rather than lying on top of its skin and overlapping, as in snakes.

• When the first fossils of dinosaur skin were found in the mid 1800s, scientists thought they were from giant prehistoric crocodiles.

• Fossil skin of the horned dinosaur Chasmosaurus has been found.

• Chasmosaurus had larger bumps or lumps, called tubercles, scattered among its normal-sized scales.

• Samples of fossil skin belonging to the duckbill hadrosaur Edmontosaurus have been found.

• Edmontosaurus was covered in thousands of small scales, like little pebbles, with larger lumps or tubercles spaced among them.

• Various specimens of fossil skin show that the scales of Iguanodon-type dinosaurs were larger than those of same-sized, similar duckbill dinosaurs.

• Scaly skin protected a dinosaur against the teeth and claws of enemies, accidental scrapes, and the bites of small pests such as mosquitoes and fleas.

STAR FACT
Many dinosaur scales were roughly six-sided, like the cells in a bee's honeycomb.

By: Parker, Steve, Dinosaurs

Camarasaurus

• Camarasaurus is one of the best known of all big dinosaurs, because so many almost-complete fossil skeletons have been found.

• Camarasaurus was a giant plant-eating sauropod.

• Camarasaurus lived during the Late Jurassic Period, about 155-150 mya.

• The famous American fossil-hunter Edward Drinker Cope gave Camarasaurus its name in 1877.

• The name Camarasaurus means "chambered reptile," because its backbones, or vertebrae, had large, scoop-shaped spaces in them, malting them lighter.

• The huge Camarasaurus was about 50ft (18m) long.

• Compared to other sauropods, such as Diplodocus, Camarasaurus had a relatively short neck and tail, but a very bulky, powerful body and legs.

• North America, Europe, and Africa were home to Camarasaurus.

• A large, short-snouted, tall head, like that of Brachiosaurus, characterized Camarasaurus.

• A fossil skeleton of a young Camarasaurus was uncovered in the 1920s, and had nearly every bone in its body lying in the correct position, as they were in life--an amazingly rare find.

By: Parker, Steve, Dinosaurs

Could dinosaurs live again?

• The Jurassic Park movies showed dinosaurs being recreated as living creatures in the modern world.

• The instructions, or genes, of all animals, including dinosaurs, are in the form of the genetic substance known as DNA (de-oxyribonucleic acid).

• In Jurassic Park, dinosaur DNA came not from dinosaur fossils, but from mosquitoes that had sucked the blood of living dinosaurs, and then been preserved.

• Scientists in Jurassic Park combined the DNA of dinosaurs with DNA from living amphibians such as frogs.

• Tiny bits of DNA have been recovered from fossils formed in the Age of Dinosaurs.

• The bits of dinosaur DNA found so far represent a tiny amount of the DNA needed to recreate a living thing.

• Most scientists doubt that living dinosaurs could really be made from bits of fossilized DNA.

• Plants today might not be suited to "modern" dinosaurs.

• "Modern" dinosaurs might die from today's diseases.

• The task of recreating a living dinosaur from tiny fragments of DNA has been compared to writing all the plays of Shakespeare starting with a couple of words.

Oviraptor

• Oviraptor was an unusual meat-eater from the dinosaur group known as theropods.

• Fossils of Oviraptor were found in the Omnogov region of the Gobi Desert in Central Asia.

• Oviraptor was about 7ft (2m) long.

• Oviraptor lived during the Late Cretaceous Period about 85-75 mya.

• Oviraptor was named "egg thief" because the first of its fossils was found lying among the broken eggs possibly of another dinosaur Protoceratops.

• The mouth of Oviraptor had no teeth. Instead, it had a strong, curved beak, like that of a parrot or eagle.

• On its forehead, Oviraptor had a tall, rounded piece of bone, like a crest or helmet, sticking up in front of its eyes.

• Oviraptor's bony head crest resembled that of today's flightless bird, the cassowary.

• Oviraptor may have eaten eggs, or cracked open shellfish with its powerful beak.

STAR FACT
Oviraptor had two bony spikes inside its mouth that it may have used to crack eggs when it closed its jaws.

By: Parker, Steve, Dinosaurs

Pack-hunters

• Dinosaurs were reptiles, but no reptiles today hunt in packs in which members cooperate with each other.

• Certain types of crocodiles and alligators come together to feed where prey is abundant, but they do not coordinate their attacks.

• Fossil evidence suggests that several kinds of meat-eating dinosaurs hunted in groups or packs.

• Sometimes the fossils of several individuals of the same type of dinosaur have been found in one place, suggesting the dinosaurs were pack animals.

• The fossil bones of some plant-eating dinosaurs have been found with many tooth marks on them, apparently made by different-sized predators, which may have hunted in packs.

• Tyrannosaurus may have been a pack-hunter.

• In southwest Montana, the remains of three or four Deinonychus were found near the fossils of a much larger plant-eater named Tenontosaurus.

• One Deinonychus probably would not have attacked a full-grown Tenontosaurus, but a group of three or four might have.

STAR FACT
Some meat-eaters may have had fairly large brains, enabling them to hunt as a group.

By: Parker, Steve, Dinosaurs

Ceratopsians

• Ceratopsians were large plant-eaters that appeared less than 90 mya.

• Most ceratopsian fossils come from North America.

• "Ceratopsian" means "horn-face," after the long horns on their snouts, eyebrows, or foreheads.

• Most ceratopsians had a neck shield or frill that swept sideways and up from the back of the head to cover the upper neck and shoulders.

• Well-known ceratopsians included Triceratops, Styracosaurus, Centrosaurus, Pentaceratops, Anchiceratops, Chasmosaurus, and Torosaurus.

• The neck frills of some ceratopsians, such as that of Chasmosaurus, had large gaps or "windows" in the bone.

• In life, the windows in the neck frill of a ceratopsian were covered with thick, scaly skin.

• Ceratopsians had no teeth in the fronts of their hooked, beaklike mouths.

• Using rows of powerful cheek teeth, ceratopsians sheared their plant food.

STAR FACT
Torosaurus had the longest skull of any land animal ever, at about 8.2 ft (2.5m) from the front of the snout to the rear of the neck frill.

By: Parker, Steve, Dinosaurs

Babies

• As far as we know, female dinosaurs laid eggs, from which their babies hatched.

• The time between eggs being laid and babies hatching out is called the incubation period.

• Incubation periods for dinosaur eggs probably varied by weeks or months depending on the temperature, as in today's reptiles.

• Many fossils of adult Maiasaura (a duckbill dinosaur, or hadrosaur) have been found, together with its nests, eggs, and hatchlings (just-hatched babies).

• Fossils of Maiasaura come mainly from Montana.

• The name Maiasaura means "good mother reptile."

• The teeth of Maiasaura babies found in the nest are slightly worn, showing that they had eaten food.

• The leg bones and joints of the Maiasaura babies were not quite fully formed, showing that they were not yet able to move about to gather their own food.

• Evidence from Maiasaura and other nesting sites shows that dinosaurs may have been caring parents, protecting and feeding their young.

STAR FACT
Some preserved nests of Maiasaura babies contain traces of fossil buds anad leaves--perhaps food brought to them by a parent?

By: Parker, Steve, Dinosaurs

Coprolites: Dino-dung

• Coprolites are the fossilized droppings, or dung, of animals from long ago, such as dinosaurs.

• Dinosaur coprolites are not soft and smelly--like other fossils, they have become solid rock.

• Many thousands of dinosaur coprolites have been found at fossil sites all over the world.

• Cracking or cutting open coprolites sometimes reveals what the dinosaur had recently eaten.

• Coprolites produced by large meat-eaters such as Tyrannosaurus contain bone from their prey.

• The microscopic structure of the bones found in coprolites shows the age of the prey when it was eaten. Most victims were very young or old, as these were the easiest creatures for a predator to kill.

• Coprolites produced by small meat-eaters such as Compsognathus may contain the hard bits of insects, such as the legs and wing-cases of beetles.

• Huge piles of coprolites found in Montana, were probably produced by the large plant-eater Maiasaura.

• Maiasaura coprolites contain the remains of cones, buds, and the needlelike leaves of conifer trees, showing that these dinosaurs had a tough diet.

STAR FACT
One of the largest dinosaur coprolites found measures 17in (44cm) long and was propably produced by Tyrannosaurus.

By: Parker, Steve, Dinosaurs

Dinosaur eyes

• No fossils have been found of dinosaur eyes, because eyes are soft and squishy, and soon rot away after death, or are eaten by scavengers.

• The main clues to dinosaur eyes come from the hollows, or orbits, in the skull where the eyes were located.

• The orbits in fossil dinosaur skulls show that dinosaur eyes were similar to those of reptiles today.

• The 19ft (6m) long sauropod Vulcanodon had tiny eyes relative to the size of its head.

• Small-eyed dinosaurs probably only had good vision in the daytime.

• The eyes of many plant-eating dinosaurs, such as Vulcanodon, were on the sides of their heads, giving them all-round vision.

• The small meat-eater Troodon had relatively large eyes, and it could probably see well even in dim light.

• Troodon's eyes were on the front of its face and pointed forward, allowing it to see detail and judge distance.

• Dinosaurs that had large bulges, called optic lobes, in their brains--detectable by the shapes of their skulls--could probably see very well, perhaps even at night.

STAR FACT
The plant-eater Leaellynasaura had large optic lobes, and probably had good eyesight.

By: Parker, Steve, Dinosaurs

Scelidosaurus

• Scelidosaurus was a medium-sized armored dinosaur, perhaps an early member of the group called the ankylosaurs.

• Fossils of Scelidosaurus have been found in North America, Europe, and possibly Asia.

• Scelidosaurus lived during the Early Jurassic Period, about 200 mya.

• Scelidosaurus was about 13ft (4m) long.

• Scelidosaurus probably moved about on four legs, although it could perhaps rear up to gather food.

A plant-eater, Scelidosaurus snipped off its food with the beaklike front of its mouth, and chewed it with its simple, leaf-shaped teeth.

• Scelidosaurus is one of the earliest dinosaurs known to have had a set of protective, bony armor plates.

• A row of about 50 bony plates, or scutes, stuck up from Scelidosaurus's neck, back, and tail.

• Scelidosaurus had rows of conical bony plates along its flanks, resembling limpets on a rock.

• Scelidosaurus was described in 1859, and named in 1863, by Richard Owen, who also invented the name "dinosaur."

By: Parker, Steve, Dinosaurs

Australia

• In the past 40 years, some of the most exciting discoveries of dinosaur fossils have come from Australia.

• Remains of the large plant-eater Muttaburrasaurus were found near Muttaburra, Queensland.

• Muttaburrasaurus was about 23ft (7m) long and similar in some ways to the well-known plant-eater Iguanodon.

• Fossils of Rhoetosaurus, a giant plant-eater, were found in 1924 in southern Queensland.

• The sauropod Rhoetosaurus was about 56ft (17m) long and lived 170 mya.

• Near Winton, Queensland, ore than 3,300 footprints show where about 130 dinosaurs once passed by.

• One of the major new fossil sites in Australia is "Dinosaur Cove," on the coast near Melbourne, Victoria.

• Fossil-rich rocks at "Dinosaur Cove" are part of the Otway-Strzelecki mountain ranges, and are 120-l00 mya.

• Remains found at "Dinosaur Cove" include Leaellynasaura and a smaller version of the huge meat-eater Allosaurus.

STAR FACT
Dinosaur Cove is difficult to reach, and many of the fossils are in hard rocks in the middle of sheer cliffs with pounding waves far beneath.

By: Parker, Steve, Dinosaurs

Dinosaur feet

• Dinosaur feet differed, depending on the animal's body design, weight, and lifestyle.

• A typical dinosaur's front feet had metacarpal bones in the lower wrist or upper hand, and two or three phalanges bones in each digit (finger or toe), tipped by claws.

• The rear feet of a typical dinosaur had metatarsal (instead of metacarpal) bones in the lower ankle.

• Some dinosaurs had five toes per foot, like most other reptiles (and most birds and mammals).

• Sauropods probably had feet with rounded bases supported by a wedge of fibrous, cushion-like tissue.

• Most sauropods had claws on their first three toes, and smaller, blunter "hooves" on the other two toes.

• Ostrich-dinosaurs such as Gallimimus had very long feet and long, slim toes for fast running.

• Many fast dinosaurs had fewer toes, to reduce weight--Gallimimus had three toes per back foot.

• The dinosaur group that includes Iguanodon, duckbilled dinosaurs, and many other plant-eaters is named the ornithopods, or "bird feet."

STAR FACT
The dinosaur group that includes all the meat-eaters, both large and small, is named the theropods, or "beast feet."

By: Parker, Steve, Dinosaurs

Sauropods

• The sauropods were the biggest of all the dinosaurs.

• The huge plant-eating sauropods lived mainly during the Jurassic Period, 208-144 mya.

• A typical sauropod had a tiny head, a very long neck and tail, a huge, bulging body, and four massive legs, similar to those of an elephant, but much bigger.

• Sauropods included the well-known Mamenchisaurus, Cetiosaurus, Diplodocus, Brachiosaurus, and Apatosaurus.

• Rebbachisaurus fossils were found in Morocco, Tunisia, and Algeria.

• Rebbachisaurus lived 120 mya.

• Cetiosaurus was about 60ft (18m) long.

• Cetiosaurus, or "whale reptile," was named this because French fossil expert Georges Cuvier thought that its giant backbones came from a prehistoric whale.

• Cetiosaurus was the first sauropod to be given an official name, in 1841--the year before the term "dinosaur" was invented,

• The first fossils of Cetiosaurus were found in Oxfordshire England, in the 1830s.

By: Parker, Steve, Dinosaurs

Extinction

• All dinosaurs on Earth had died out, or become extinct, by 65 mya.

• Many other reptiles, such as pterosaurs and plesiosaurs, and many other animals and plants disappeared with the dinosaurs, in a "mass extinction."

• A possible cause of the mass extinction was a new kind of disease that swept across the land and seas.

• The mass extinction of the dinosaurs and other animals may have been due to a series of huge volcanic eruptions that filled the air with poisonous fumes.

• Climate change is another possible cause of the mass extinction--perhaps a period of global warming that lasted for a few hundred years, or even longer.

• One theory for the mass extinction is that a giant lump of rock from space--a meteorite--hit Earth.

• A giant meteorite smashing into Earth would have set off earthquakes and volcanoes, and thrown up vast amounts of dust to darken the skies.

• Sides darkened by dust for a year or more would mean the death of many plants, so the death of plant-eating animals, and consequently the meat-eaters.

• One great puzzle about the disappearance of the dinosaurs is why similar reptiles, such as crocodiles, lizards, and turtles, survived.

STAR FACT
Scientists found a huge crater--the Chixulub Crater--under seabed mud off the coast of Yucatan, Mexico. This could be where a giant meteorite hit Earth 65 mya.

By: Parker, Steve, Dinosaurs

Dilophosaurus

• Dilophosaurus was a large meat-eating dinosaur in the group known as the ceratosaurs.

• About 200 mya, Dilophosaurus roamed the Earth in search of prey.

• Fossils of Dilophosaurus were found in Arizona, and possibly Yunnan, China.

• The remains of Dilophosaurus in Arizona, were discovered by Jesse Williams, a Navajo Native American, in 1942.

• Studying the fossils of Dilophosaurus proved very difficult, and the dinosaur was not given its official name until 1970.

• Dilophosaurus measured about 20ft (6m) from its nose to the end of its very long tail.

• The name Dilophosaurus means "two ridged reptile," from the two thin, rounded, bony crests on its head, each shaped like half a dinner plate.

• The crests of Dilophosaurus were too thin and fragile to be used as weapons for head-butting.

• Brightly colored skin may have covered Dilophosaurus's head crests, as a visual display to rivals or enemies.

STAR FACT
Dilophosaurus probably weighed about 1,100lb (500kg)--as much as polar bears today.

By: Parker, Steve, Dinosaurs

Mysteries

• Some dinosaurs have been named on very scant evidence, such as a single bit of fossil bone, or just one tooth or claw.

• The small meat-eater Troodon was named in 1856 on the evidence of a single tooth.

• The first tooth of Troodon was found in the Judith River region of Montana.

• At first, the tooth of Troodon was thought to have come from a lizard such as a monitor lizard.

• In the early 1900s, more Troodon-like teeth were found in Alberta and Wyoming, and were believed to have come from a pachycephalosaur or "bone-head" dinosaur.

• In the 1980s, a fuller picture of Troodon was built up by putting its teeth together with other fossils, including bones.

• Only parts of the hands and arms of Deinocheirus have been found. They were discovered in Mongolia, Central Asia, in the 1970s.

• It is possible that Deinocheirus was a huge ostrich-dinosaur, perhaps as tall as a giraffe, at 16-19ft (5-6m).

• Therizinosaurus, or "scythe reptile," was a huge dinosaur known only from a few parts of its limbs. It lived in the Late Cretaceous Period in Mongolia, Central Asia.

• A mysterious fossil claw was found, thought possibly to belong to Therizinosaurus, and measuring about 35in (90cm) around its outer curve.

By: Parker, Steve, Dinosaurs

Psittacosaurus

• Psittacosaurus was a plant-eater in the group known as the ceratopsians, or horn-faced dinosaurs.

• Living in the Middle Cretaceous Period, Psittacosaurus walked the Earth about 115-110 mya.

• Psittacosaurus was named in 1923 from fossils found in Mongolia, Central Asia.

• Fossils of Psittacosaurus have been found at various sites across Asia, including ones in Russia, China, and Thailand.

• The rear legs of Psittacosaurus were longer and stronger than its front legs, suggesting that this dinosaur may have reared up to run fast on its rear legs, rather than running on all four legs.

• Psittacosaurus measured about 7ft (2m) long.

• On each foot Psittacosaurus had four toes.

• The name Psittacosaurus means "parrot reptile," after the dinosaur's beak-shaped mouth, like that of a parrot.

• Inside its cheeks, Psittacosaurus had many sharp teeth capable of cutting and slicing through tough plant material.

STAR FACT
Fossil evidence shows that when newly hatched from their eggs, baby Psittacosaurus were hardly longer than a human hand.

By: Parker, Steve, Dinosaurs

Beaks

• Several kinds of dinosaurs had a toothless, beak-shaped front to their mouths.

• Beaked dinosaurs included ceratopsians (horn-faces) such as Triceratops, ornithopods such as Iguanodon and the hadrosaurs (duckbills), stegosaurs, segnosaurs, ankylosaurs (armored dinosaurs), and fast-running ostrich-dinosaurs.

• Most beaked dinosaurs had chopping or chewing teeth near the backs of their mouths, in their cheeks, but ostrich-dinosaurs had no teeth.

• A dinosaur's beak was made up of the upper (maxilla) and the lower (mandible)jaw bones.

• Ornithischian (bird-hipped) dinosaurs had what is called a "predentary" bone at the front tip of the lower jaw.

• Ceratopsian (horn-faced) dinosaurs had a "rostral" bone at the front tip of the upper jaw.

• In life, the bones at the front of a dinosaur's jaw would have been covered with horn, which formed the outer shape of the beak.

• Dinosaurs almost certainly used their beaks for pecking, snipping, tearing, and slicing their food.

• Dinosaurs may have used their beaks to peck fiercely at any attackers.

STAR FACT
Some of the largest beaks in relation to body size belonged to Oviraptor and Psittacosaurus.

By: Parker, Steve, Dinosaurs

Massospondylus

• Massospondylus was a medium-sized plant-eater belonging to the group known as the prosauropods.

• Africa and perhaps North America were home to Massospondylus, about 200 mya.

• In total, Massospondylus was about 15ft (5m) long, with almost half of this length being its tail.
• The rear legs of Massospondylus were bigger and stronger than its front legs, so it may have reared up to reach high-up food.

• The name Massospondylus means "huge backbone."

• Fossils of more than 80 Massospondylus have been found, making it one of the best-studied dinosaurs.

• Massospondylus had a tiny head compared to its large body, and it must have spent many hours each day gathering enough food to survive.

• The front teeth of Massospondylus were surprisingly large and strong for a plant-eater, with ridged edges more like meat-eating teeth.

• The cheek teeth of Massospondylus were too small and weak for chewing large amounts of plant food, so perhaps the dinosaur's food was mashed mainly in its stomach.

• In the 1980s, some scientists suggested that Massospondylus may have been a meat-eater, partly because of the ridged edges on its front teeth.

By: Parker, Steve, Dinosaurs

Stomach stones

• Some dinosaur fossils are found with unusually smooth, rounded stones, like seashore pebbles, jumbled up among or near them.

• Smoothed pebbles occur with dinosaur fossils far more than would be expected by chance alone.

• Smooth stones are mainly found with or near the remains of large plant-eating dinosaurs, especially those of prosauropods such as Massospondylus, Plateosaurus, and Riojasaurus, sauropods such as Brachiosaurus and Diplodocus, the parrot-beaked Psittacosaurus, and the stegosaurs.

• Some plant-eating dinosaurs may have used smooth stones to help process their food.

• The smoothed pebbles associated with dinosaur remains are known as gastroliths, gastric millstones, or gizzard stones.

• Gastroliths were stones that a dinosaur found on the ground and deliberately swallowed into its stomach.

• In the dinosaur's stomach, gastroliths acted as "millstones," crushing and churning plant food, and breaking it down into a soft pulp for better digestion.

• As gastroliths churned and rubbed inside a dinosaur's guts, they became very rounded, smoothed and polished.

• Gastroliths as small as a pea and as large as a football have been found.

• Gastroliths may be the reason why many big plant-eaters, especially sauropods, had no chewing teeth--the mashing was done inside the guts.

By: Parker, Steve, Dinosaurs

Migration

• Almost no land reptiles today go on regular, long-distance journeys, called migrations.

• Over the past 30 years, scientists have acquired evidence that some dinosaurs regularly migrated.

• Evidence for migrating dinosaurs comes from the positions of the continents at the time. In certain regions, cool winters would have prevented the growth of enough plants for dinosaurs to eat.

• Fossil evidence suggests that some plants stopped growing during very hot or dry times, so some dinosaurs would have had to migrate to find food.

• The footprints or tracks of many dinosaurs traveling in herds is possible evidence that some dinosaurs migrated.

• Dinosaurs that may have migrated include Centrosaurus and Pachyrhinosaurus, sauropods such as Diplodocus, and ornithopods such as Iguanodon and Muttaburrasaurus.

• One huge fossil site in Alberta, Canada, contains the fossils of about 1,000 Pachyrhinosaurus--perhaps a migrating herd that got caught in a flood.

• In North America, huge herds of Centrosaurus migrated north for the brief sub-Arctic summer, when plants were abundant, providing plentiful food.

• In autumn, Centrosaurus herds traveled south again to overwinter in the forests.

STAR FACT
Migrating Centrosaurus may have walked 60mi (100km) a day.



By: Parker, Steve, Dinosaurs

China

• For centuries, dinosaur fossils in China were identified as belonging to folklore creatures such as dragons.

• The first dinosaur fossils studied scientifically if China were uncovered in the 1930s.

• Because of China's political isolation in the past, many dinosaur fossils found there remained unknown to scientists in other countries.

• From the 1980s, dinosaur discoveries in almost every province of China have amazed scientists around the globe.

• A few exciting dinosaur finds in China have been fakes, such as part of a bird skeleton that was joined to the part-skeleton of a dinosaur along a natural-looking crack in the rock.

• Some better-known Chinese finds of dinosaurs include Mamenchisaurus, Psittacosaurus, Tuojiangosaurus, and Avimimus.

• Remains of the prosauropod Lufengosaurus were uncovered in China's southern province of Yunnan, in 1941.

• China's Lufengosaurus lived during the Early Jurassic Period, and measured about 19-22ft (6-7m) long.

• Many recently found fossils in China are of feathered dinosaurs.

STAR FACT
Of all world's countries, probably only the U.S.A. has more fossil dinosaurs than China.

By: Parker, Steve, Dinosaurs

South America

• Many of the most important discoveries of dinosaur fossils in the last 30 years were made in South America.

• Dinosaur fossils have been found from the north to the south of the continent, in the countries of Colombia, Peru, Chile, Brazil, Uruguay, and Argentina.

• Most dinosaur fossils in South America have been found on the high grassland, scrub, and semi-desert of southern Brazil and Argentina.

• Some of the earliest known dinosaurs, such as Herrerasaurus and Eoraptor, lived more than 225 mya in Argentina.

• Some of the last dinosaurs, such as the sauropods Saltasaurus and Titanosaurus, lived in Argentina.

• Fossils of the meat-eating predator Piatnitzkyosaurus come from Cerro Condo in southern Argentina.

• Piatnitzkyosaurus was similar to the great predator Allosaurus of North America, but at 13-16ft (4-5m) long was less than half its size.

• Like many dinosaurs in Argentina, Piatnitzkyosaurus lived during the Middle Jurassic Period.

• Remains of about ten huge Patagosaurus sauropods were found in the fossil-rich region of Chubut, Argentina, from 1977.

STAR FACT
Some of the biggest of all dinosaurs, including the largest meat-eater Giganoosaurus and the vast sauropod Argentinosaurus come from Argentina.

By: Parker, Steve, Dinosaurs

Tuojiangosaurus

• Tuojiangosaurus was a member of the group called plated dinosaurs, or stegosaurs.

• The first nearly complete dinosaur skeleton to be found in China was of a Tuojiangosaurus, and excellent fossil skeletons are on display in several Chinese museums.

• The name Tuojiangosaurus means "Tuo River reptile."

• Tuojiangosaurus lived during the Late Jurassic Period, about 155 mya.

• Tuojiangosaurus was 23ft (7m) long from nose to tailend.

• The weight of Tuojiangosaurus was probably about 1 ton.

• Like other stegosaurs, Tuojiangosaurus had tall slabs or plates of bone on its back.

• The back plates of Tuojiangosaurus were roughly triangular and probably stood upright in two rows that ran from the neck to the middle of the tail.

• Tuojiangosaurus plucked low-growing plant food with the beak-shaped front of its mouth, and partly chewed the plant material with its leaf-shaped, ridge-edged cheek teeth.

• On its tail, Tuojiangosaurus had four long spikes arranged in two Vs, which it could swing at enemies to keep them at a distance or inflict wounds.

By: Parker, Steve, Dinosaurs

Head crests

• Many dinosaurs had lumps, bumps, plates, bulges, ridges, or other shapes of bone on their heads, called head crests.

• Head crests may have been covered with brightly colored skin in life, for visual display.

• Meat-eaters with head crests included Carnotaurus and Dilophosaurus.

• The dinosaurs with the largest and most complicated head crests were the hadrosaurs.

• The largest dinosaur head crest was probably a long, hollow, tubular shape of bone belonging to the hadrosaur Parasaurolophus.

• The head crests of hadrosaurs may have been involved in making sounds.

• Some years ago the hadrosaur Tsintaosaurus was thought to have a very unusual head crest--a hollow tube sticking straight up between the eyes, like a unicorn's horn.

• The so-called head crest of Tsintaosaurus is now thought to be the fossil part of another animal, and not part of Tsintaosaurus at all.

• Tsintaosaurus is now usually known as Tanius, a hadrosaur with a small crest or no crest at all!

STAR FACT
The head crests of some large Parasaurolophus, perhaps full-grown males, reached an incredible 6ft (1.8m) in lenght.

By: Parker, Steve, Dinosaurs

Sails

• Long, bony extensions, like rods or spines, stuck up from the backs of some dinosaurs.

• In life, a dinosaur's bony extensions may have held up a large area of skin, commonly called a back sail.

• Dinosaurs with back sails included the huge meat-eater Spinosaurus and the large plant-eater Ouranosaurus.

Spinosaurus and Ouranosaurus both lived over 100 mya.

• Fossils of Spinosaurus and Ouranosaurus were found in North Africa.

• The skin on a dinosaur's back sail may have been brightly colored, or may even have changed color, like the skin of a chameleon lizard today.

• A dinosaur's back sail may have helped to control its body temperature.

• Standing sideways to the sun, a back sail would absorb the sun's heat and allow the dinosaur to warm up quickly, ready for action.

• Standing in the shade, a back sail would lose warmth and help the dinosaur to avoid overheating.

• The bony back rods of Spinosaurus were up to 5.2ft (1.6m) tall.

By: Parker, Steve, Dinosaurs

North America

• North America is the continent where most dinosaur fossils have been found.

• Most dinosaur fossils in North America come from the dry, rocky "badlands" of the Midwest region, including Alberta in Canada, and the U.S. states of Montana, Wyoming, Utah, Colorado, and Arizona.

• Fossils of the most famous dinosaurs come from North America, including Allosaurus, Tyrannosaurus, Diplodocus, Triceratops, and Stegosaurus.

• Several fossil-rich sites in North America are now national parks.

• The U.S. Dinosaur National Monument, on the border of Utah and Colorado, was established in 1915.

• The Cleveland-Lloyd Dinosaur Quarry in Utah contains fossils of stegosaurs, ankylosaurs, sauropods, and meat-eaters such as Allosaurus.

• Along the Red Deer River in Alberta, a large area with thousands of dinosaur fossils has been designated the Dinosaur Provincial Park.

• Fossils found in Alberta include those of the meat-eater Albertosaurus, armored Euoplocephalus, and the duckbill Lambeosaurus.

• The Dinosaur Provincial Park in Alberta is a United Nations World Heritage Site--the same status as the pyramids of ancient Egypt.

• A huge, 65ft (20m) long plant-eater was named Alamosaurus after the famous Battle of the Alamo in Texas in 1836.

By: Parker, Steve, Dinosaurs

Iguanodon

• Iguanodon was a large plant-eater in the dinosaur group known as ornithopods.

• Numerous fossils of Iguanodon have been found in several countries in Europe, including England, Belgium, Germany, and Spain.

• Iguanodon measured about 29ft (9m) from nose to tail.

• It is estimated that an Iguanodon weighed about the same as a large elephant.

• Iguanodon lived during the Early to Middle Cretaceous Period, 140-110 mya.

• Iguanodon probably walked and ran on its large, powerful back legs for much of the time, with its body held horizontal.

• A cone-shaped spike on Iguanodon's thumb may have been a weapon for jabbing at rivals or enemies.

• The three central fingers on Iguanodon's hands had hooflike claws for occasional four-legged walking.

• The fifth or little finger of Iguanodon was able to bend across the hand for grasping objects, and was perhaps used to pull plants toward the mouth.

STAR FACT
Iguanodon was one of the very first dinosaurs to be given an official scientific name, in 1825.

Hibernation

• Dinosaurs may have gone into an inactive state called hibernation during long periods of cold conditions, as many reptiles do today.

• Dinosaurs such as the small plant-eater Leaellynasaura, found at "Dinosaur Cove," Australia, may have had to hibernate due to the yearly cycle of seasons there.

• Dinosaur Cove, Australia, was nearer the South Pole when dinosaurs lived there, 120-100 mya.

• The climate was relatively warm 120-100 mya, with no ice at the North or South Poles.

• Dinosaurs at Dinosaur Cove, Australia, would have had to cope with long hours of darkness during winter, when few plants grew.

• Australia's Dinosaur Cove dinosaurs may have hibernated for a few months each year to survive the cool, dark conditions.

• The eyes and brain shape of Leaellynasaura from Dinosaur Cove, Australia, suggest that this dinosaur had good eyesight.

• Leaellynasaura may have needed good eyesight to see in the winter darkness, or in the dim forests.

• Dinosaur fossils have been found in the Arctic region near the North Pole.

• Arctic dinosaurs either hibernated during winter, or migrated south to warmer regions.

By: Parker, Steve, Dinosaurs

Sounds

• Few reptiles today make sounds, except for simple hisses, grunts, and coughs.

• Fossils suggest that dinosaurs made a variety of sounds in several different ways.

• The bony, hollow head crests of duckbills (hadrosaurs) may have been used for making sounds.

• The head crests of some hadrosaurs contained tubes called respiratory airways, used for breathing.

• Air blown forcefully through a hadrosaur's head crest passages could have made the whole crest vibrate.

• A hadrosaur's vibrating head crest may have made a loud sound like a honk, roar, or bellow--similar to an elephant trumpeting with its trunk.

• Fossil skulls of some hadrosaurs, such as Edmontosaurus and Kritosaurus, suggest that there was a loose flap of skin, like a floppy bag, between the nostrils and the eyes.

• Kritosaurus may have inflated its loose nasal flap of skin like a balloon to make a honking or bellowing sound, as some seals do today.

• Dinosaurs may have made sounds to keep in touch with other members of their herd, to frighten away enemies, to intimidate rivals, and to impress potential mates at breeding time.

STAR FACT
By blowing through models of hadrosaur head crests, a wide range of sounds can be made--a bit like those of brass and wind instruments!

By: Parker, Steve, Dinosaurs

Nodosaurs

• Nodosaurs were a subgroup of armored dinosaurs, in the main ankylosaur group.

• The nodosaur subgroup included Edmontonia, Sauropelta, Polacanthus, and Nodosaurus.

• Nodosaurs were slow-moving, heavy-bodied plant-eaters with thick, heavy nodules, lumps, and plates of bone in their skin for protection.

• Most nodosaurs lived during the Late Jurassic and the Cretaceous Periods, 150-65 mya.

• Edmontonia lived in North America during the Late Cretaceous Period, 75-70 mya.

• Edmontonia
was about 23ft (7m) long, but its bony armor made it very heavy for its size.

• Along its neck, back, and tail Edmontonia had rows of flat and spiky plates.

• The nodosaur Polacanthus was about 13ft (4m) long and lived 120-110 mya.

• Fossils of Polacanthus come from the Isle of Wight, southern England, and perhaps from North America, in South Dakota.

STAR FACT
Like many nodosaurs, Edmontonia and Polacanthus probably had long, fierce spikes on their shoulders, used to "spear" enemies.

By: Parker, Steve, Dinosaurs

Inventing the 'dinosaur.'

• When fossils of dinosaurs were first studied by scientists in the 1820s, they were thought to be from huge lizards, rhinoceroses, or even whales.

• The first dinosaur to be given an official name was Megalosaurus, by English clergyman William Buckland in 1824.

• Fossils of dinosaurs were found and studied in 1822 by Gideon Mantell, a country doctor in Sussex, southern England.

• In 1825, Englishman Gideon Mantell named his creature Iguanodon, because its fossil teeth were very similar in shape to, but larger than, the teeth of the iguana lizard.

• In the late 1830s, British scientist Richard Owen realized that some fossils did not belong to lizards, but to an as yet unnamed group of reptiles.

• In 1841-42, Richard Owen invented a new name for the group of giant prehistoric reptiles--Dinosauria.

• The name "dinosaur" means "terrible reptile."

• Life-sized models of several dinosaurs were made by sculptor Waterhouse Hawkins in 1852-54.

• Hawkins' models were displayed in the gardens of the Crystal Palace Exhibition in London, and caused a public sensation--the first wave of "Dino-mania."

• The three main dinosaurs of the Dinosauria in the 1840s were Iguanodon, the big meat-eater Megalosaurus, and the nodosaur Hyaelosaurus.

By: Parker, Steve, Dinosaurs

Brains

• There is a broad link between the size of an animal's brain compared to the size of its body, and the level of intelligence it shows.

• Some fossil dinosaur skulls have preserved the hollow where the brain once was, revealing the approximate size and shape of the brain.

• In some cases a lump of rock formed inside a fossil skull, taking on the size and shape of the brain.

• The tiny brain of Stegosaurus weighed about 2.5-30z (70-80g), while the whole dinosaur weighed up to 2 tons.

• The brain of Stegosaurus was only 1/25,000th of the weight of its whole body (in a human it is 1/50th).

• Brachiosaurus's brain was perhaps only 1/100,000th of the weight of its whole body.

• The brain of the small meat-eater Troodon was about 1/100th the weight of its whole body.

• The brain to body size comparison for most dinosaurs is much the same as the brain to body size for living reptiles.

• Small and medium sized meat-eaters such as Troodon may have been as "intelligent" as parrots or rats.

• It was once thought that Stegosaurus had a "second brain" in the base of its tail! Now this lump is thought to have been a nerve junction.

By: Parker, Steve, Dinosaurs

Segnosaurs

• Little is known about the segnosaur group of dinosaurs--the subject of much disagreement among experts.

• Segnosaurs are named after almost the only known member of the group, Segnosaurus.

• The name Segnosaurus means "slow reptile."

• Segnosaurus lived during the Mid to Late Cretaceous Period, about 90 mya.

• Fossils of Segnosaurus were found mainly in the Gobi Desert in Central Asia in the 1970s. The dinosaur was named in 1979 by Mongolian scientist Altangerel Perle.

• Segnosaurus had a narrow head and probably a toothless, beaklike front to its mouth.

• Experts have variously described Segnosaurus as a predatory meat-eater, a swimming or wading fish-eater, a rearing-up leaf-eater, or even an ant-eater.

• Different experts have said Segnosaurus was a theropod, a prosauropod, and an ornithopod.

• Some scientists have suggested that Segnosaurus was a huge dinosaur-version of today's anteater that ripped open the nests of termites and ants with its powerful claws.

STAR FACT
Segnosaurus was a sizeable dinosaur, probably about 19ft (6m) long and standing 7ft (2m) tall.

By: Parker, Steve, Dinosaurs

Dino-birds: 2

• Fossils found during the last 20 years show that some dinosaurs may have been covered with feathers or fur.

• Sinosauropteryx was a small, 3ft (1m) long meat-eater that lived 135 mya in China.

• Fossils of Sinosauropteryx show that parts of its body were covered not with the usual reptile scales, but with feathers.

• The overall shape of Sinosauropteryx shows that, despite being feathered, it could not fly.

• The feathers of Sinosauropteryx may have been for camouflage, for visual display, or to keep it warm--suggesting it was warm-blooded.

• Avimimus was a small, light dinosaur. Its fossils come from China and Mongolia, and date from 85-82 mya.

• The 5ft (1.5m) long Avimimus had a mouth shaped like a bird's beak for pecking at food.

• The fossil arm bones of Avimimus have small ridges of the same size and shape as the ridges on birds' wing bones, where feathers attach.

• In modern science, any animal with feathers is a bird, so some experts say that feathered dinosaurs were not actually dinosaurs or even reptiles, but birds.

• Some experts say that birds are not really a separate group of animals, but a subgroup of dinosaurs that lives on today, and they should be regarded as feathered dinosaurs.

By: Parker, Steve, Dinosaurs

After dinosaurs

• The Age of Dinosaurs came to a fairly sudden end 65 mya. We know this from rocks and fossils, which changed dramatically at that time.

• The Cretaceous Period ended 65 mya.

• There are no dinosaur fossils since 65 mya.

• Many animal groups, including fish, crocodiles, turtles, lizards, birds, and mammals, survived the extinction that took place 65 mya.

• Birds and mammals in particular underwent rapid changes after the dinosaurs disappeared.

• Within 10 million years of the dinosaurs' demise, bats, primates, armadillos, hoofed mammals, and rodents such as rats had all appeared.

• The land mammal that came closest to rivaling the great size of the dinosaurs was Indricotherium, also known as Baluchitherium.

• Indricotherium was 26ft (8m) long and weighed perhaps 25 tons.

• Indricotherium was less than half the size of the biggest dinosaurs.

STAR FACT
Fossil evidence shows that when newly hatched from their eggs, baby Psittacosaurus were hardly longer than a human hand.

STAR FACT
Some people believe that dinosaurs may still be alive today, deep in tropical forests or in remote valleys--but no firm evidence exists.

KEY
[A] - Meat-eating dinosaurs

[B] - Herbivorous dinosaurs

[C] - Dinosaurs' anatomy

[D] - Lifestyle and behavior

[E] - Where they lived

[F] - Fossil finds

By: Parker, Steve, Dinosaurs

Dinosaur Facts and Figures

From dinosaur fossils found throughout the world, scientists have gained evidence about when dinosaurs lived, what they ate, and how large they grew. Dinosaurs lived during the Mesozoic era, from 225 to 65 million years ago. The Mesozoic era is divided into three periods: Triassic, Jurassic, and Cretaceous.

TRIASSIC PERIOD, from 225 to 195 million years ago
First dinosaurs appeared during the Triassic period. Most early dinosaurs were small, rarely longer than 15 feet.
Early meat-eating dinosaurs were called Theropods.
Earliest-known dinosaurs were meat-eaters, found in Argentina: Eoraptor (the most primitive dinosaur, only about 40 inches long) and Herrerasaurus.
Early plant-eating dinosaurs were called Prosauropods. Plateosaurus and Anchisaurus were two early plant-eating dinosaurs.

JURASSIC PERIOD, from 195 to 135 million years ago
Dinosaurs that lived during the Jurassic period were gigantic.
Jurassic dinosaurs included the Sauropods, giant long-necked plant-eaters, the largest land animals ever. Apatosaurus and Brachiosaurus (70-80feet) and Diplodocus (over 80 feet) were Sauropods.
Stegosaurus (30 feet), a large plant-eater, had sharp, bony plates along its back.
Allosaurus and Megalosaurus, two giant meat-eaters, fed on large plant-eating dinosaurs like the Apatosaurus and Stegosaurus. Megalosaurus grew to 30 feet in length; Allosaurus, 30-36 feet.

CRETACEOUS PERIOD, from 135 to 65 million years ago
New dinosaurs appeared during the Cretaceous period, but by the end of the Cretaceous period, all dinosaurs had died out.
New plant-eaters: Triceratops and other horned dinosaurs, Anatosaurus and other duckbilled dinosaurs, Ankylosaurus and other armored dinosaurs.
New meat-eater: Tyrannosaurus Rex, the largest and one of the fiercest meat-eaters, growing to 20 feet high and 40 feet long.

DID YOU KNOW?
Tyrannosaurus Rex had teeth that were 7 inches long!
Sauropods had teeth that were not good for chewing, so they ate
stones, which ground up the food in their stomachs.
The Stegosaurus had the smallest brain of any dinosaur. Its
brain weighed only 2.5 ounces.
Scientists studying dinosaur bones believe that birds are probably
descended from small dinosaurs.

Although we do not know for sure why dinosaurs became extinct, one theory is that an asteroid from space hit the Earth 65 million years ago and blocked out the sunlight. This possibly caused drastic climate changes that made the dinosaurs starve to death.

Source: World Almanac for Kids

Tuesday, October 10, 2006

Here Comes The Sun

We're taught from an early age that the sun rises in the east and sets in the west, Of course, this is more generalisation than absolute fact -- the actual direction wit[ depend upon where you are in the world and the time of year.

In equatorial countries, the sun rises arid sets in roughly the same position and at the same time all year round. But in more distant latitudes, there is a huge amount of seasonal variation in the position of the sun's journey across the sky, as well as in the number of hours of daylight Even in :he Scottish city of Glasgow, the variation between the shortest and longest days amounts to almost 11 hours.

Atmospheric changes
Sunsets have long been popular with photographers, wherever they are, although it seems as if shots looking out over the ocean as the sun descends over the horizon are particularly sought after.

The intensity and scale of a sunset can vary enormously from day to day. The height and density of any cloud cover, the air temperature and the amount of dust, smoke or pollution in the air all play a part in how light is scattered and colours rendered. Forest fires can generate truly spectacular sunsets, but perhaps the best progenitors are volcanic eruptions. The eruption of the volcano on the Indonesian island of Krakatoa in 1883 was said to have led to beautiful sunsets all over the world for more than a year. Clouds also help to improve the quality of a sunset shot, either by obscuring Dart of the sky or by taking on the colours of the sunset.

Sunsets tend to be more popular than sunrises for two main reasons. First, they don't necessitate a pro-dawn start in the cold and darkness. And second, sunrises tend to produce a less dramatic sky. The cold night air usually doesn't carry the same level of dust and other particles as the atmosphere at the end of a warm day. Consequently, light waves are scattered less at dawn than at sunset. Many landscape and travel photographers prefer these lighting conditions as the colours are more subtle and the air that little bit clearer. Chances are, you will also get a more clearly defined landscape and, with Luck, you'll encounter an early morning mist, which will add drama and help to create a scene that's immediately identifiable with dawn.

Some photographers choose to warm-up their sunrise photos by using an 81 A, 81B or 81C filter; these filter out varying amounts of blue light in order to bring the yellows and oranges to the fore.

A straightforward approach
Photographing a sunset or sunrise is fairly straightforward. It's vita! that you secure your camera on a tripod and use a remote release or self-timer to trip the shutter for maximum image sharpness, particularly with long exposures.

Make sure you arrive at your chosen location nice and early so that you can work out where the sun will meet the horizon and compose your shot accordingly -- once the sun gets close to the horizon, things move quickly, with clouds moving and colours changing by the minute.

Try to avoid placing either the sun or the horizon in the centre of the shot and make sure you have the horizon level, especially if the sun is rising or setting over the sea.

A meter reading should be taken off the sky (be careful to ensure the sun isn't within the frame) when you're ready to release the shutter. Lock this exposure value in so that you can recompose to include the sun and then fire a sequence of images with different exposures bracketed around your metered value. 8y making so many different exposures, you will give yourself a choice of images with varying degrees of colour saturation.

Apart from the sun and sky, the foreground and other areas of the image are likely to be rendered as silhouette. As a result, you should try to include a recognisable shape such as a palm tree or yacht to add interest to the scene. Alternatively, by including water in the foreground, the reflected colour of the sky's changing palette will boost the image's overall impact.

Away from water and further inland, mountain photography at dusk or dawn can be breathtaking. Snow-covered peaks take on a different guise at sunrise and sunset, reflecting colours that range from vibrant pinks to liquid gold. A mountain lit by the setting sun and breaking the line of the horizon Fs guaranteed to add drama to this changing scene.

Geo photo
Sunrises and sunsets are photographic staples, so it's important to get your shots just right. This month, Keith Wilson tells you how

Recommended reading
• Seeing Landscapes by Charlie Waite, Collins & Brown, pb, £12.99

• Capturing the Light by Peter Watson, Photographers' Institute Press, hb, £ 24.95

Next month: Long exposures

Dos and don'ts of photographing sunrise and sunsets
Do…

• Check the sunrise and sunset times for your location in advance and End out where, precisely, the sun wilt rise or set

• Use a lens hood to cut clown on flare caused by direct light

• Bracket your exposures around a spot meter reading taken from the sky to give you a number of images with varying levels of colour saturation

Don't…
• Forget your tripod. For maximum image sharpness, it's always best to fix your camera to a tripod and fire the shutter with a remote release

• Point and shoot, Making an automatic exposure reading with the sun included in the frame and firing instantly will result in an underexposed image of dark colours in the sky and a totally black foreground

• Ignore the foreground. The sun and sky may be spectacular, but think carefully about what's in the frame in front of you. Water is wonderful for reflecting the sky's colours


Equipment

Low-cost option: sun compass
This pocket-sized accessory features a small magnetic compass centred between a series of markings giving the month by month direction of sunrise and sunset. Used by technicians and cameramen in the TV, film and aviation industries, the compass indicates sunrise and sunset positions for mid-month, based on a latitude of 50°N (London), but is useable for all areas between 45°N and 55°N. If you're serious about photographing sunrises and sunsets, this is the accessory for you. It's likely to set you back about £20. Contact: http://www.flight-logistics.com/

Intermediate option: tripod
No self-respecting landscape photographer would leave home without their tripod and it's an essential piece of kit when photographing sunrises or sunsets. There are hundreds of different types on the market to suit all budgets. The ideal model should be one that isn't too heavy to hold yet solid enough to support your camera and lens outdoors on a windy day. Tripods made of carbon fibre or aircraft grade aluminium are increasingly popular as they are both light and strong. Manfrotto produces a highly regarded range of professional-standard tripods.

Digital lens option: superzooms
Superzoom is the term given to a lens that covers the most popular focal lengths, from wide angle to telephoto. Having one optic to fulfil all of your needs allows you to appraise numerous composition possibilities without changing lenses, which is ideal when photographing a sunrise or sunset from a set position on a tripod. The downside is that superzooms are 'slower' than smaller zooms or fixed-focal-length lenses -- that is, they have smaller maximum apertures and hence let in less light.

Sigma and Tamron, the two biggest independent lens makers, both have 18-200-millimetre superzooms designed specifically for use with digital SLR cameras that use the APS-C-size imaging sensor. These lenses cover a focal range equivalent to 27-300-millimeters in the 35-millimetre format, weigh just 400 grams and cost less than £300. They are available in al) of the major digital-SLR mounts, including Canon, Nikon, Pentax and Sony alpha. Contacts: http://www.sigma-imaging-uk.com/ ; http://www.intro2020.com/

Source: Geographical, Sep2006

High Hopes For Hydrogen

Using hydrogen to fuel cars may eventually slash oil consumption and carbon emissions, but it will take some time

Developing cleaner power sources for transportation is perhaps the trickiest piece of the energy puzzle. The difficulty stems from two discouraging facts. First, the number of vehicles worldwide, now 750 million, is expected to triple by 2050, thanks largely to the expanding buying power of customers in China, India and other rapidly developing countries. And second, 97 percent of transportation fuel currently comes from crude oil.

In the near term, improving fuel economy is the best way to slow the rise in oil use and greenhouse gas emissions from cars and trucks. But even if automakers triple the efficiency of their fleets and governments support mass transit and smart-growth strategies that lessen the public's reliance on cars, the explosive growth in the number of vehicles around the world will severely limit any reductions in oil consumption and carbon dioxide emissions. To make deeper cuts, the transportation sector needs to switch to low-carbon, nonpetroleum fuels. Liquid fuels derived from woody plants or synthesized from tar sands or coal may play important roles. Over the long term, however, the most feasible ways to power vehicles with high efficiency and zero emissions are through connections to the electric grid or the use of hydrogen as a transportation fuel.

Unfortunately, the commercialization of electric vehicles has been stymied by a daunting obstacle: even large arrays of batteries cannot store enough charge to keep cars running for distances comparable to gasoline engines. For this reason, most auto companies have abandoned the technology. In contrast, fuel-cell vehicles--which combine hydrogen fuel and oxygen from the air to generate the power to run electric motors--face fewer technical hurdles and have the enthusiastic support of auto manufacturers, energy companies and policymakers. Fuel-cell vehicles are several times as efficient as today's conventional gasoline cars, and their only tailpipe emission is water vapor.

What is more, hydrogen fuel can be made without adding any greenhouse gases to the atmosphere. For example, the power needed to produce hydrogen from electrolysis--using electricity to split water into hydrogen and oxygen--can come from renewable energy sources such as solar cells, wind turbines, hydroelectric plants and geothermal facilities. Alternatively, hydrogen can be extracted from fossil fuels such as natural gas and coal, and the carbon by-products can be captured and sequestered underground.

Before a hydrogen-fueled future can become a reality, however, many complex challenges must be overcome. Carmakers must learn to manufacture new types of vehicles, and consumers must find them attractive enough to buy. Energy Companies must adopt cleaner techniques for producing hydrogen and build a new fuel infrastructure that will eventually replace the existing systems for refining and distributing gasoline. Hydrogen will not fix all our problems tomorrow; in fact, it could be decades before it starts to reduce greenhouse gas emissions and oil use on a global scale. It is important to recognize that a hydrogen transition will be a marathon, not a sprint.

The Fuel-Cell Future
OVER THE PAST DECADE, 17 countries have announced national programs to develop hydrogen energy, committing billions of dollars in public funds. In North America more than 30 U.S. states and several Canadian provinces are developing similar plans. Most major car companies are demonstrating prototype hydrogen vehicles and investing hundreds of millions of dollars into R&D efforts. Honda, Toyota and General Motors have announced plans to commercialize fuel-cell vehicles sometime between 2010 and 2020. Automakers and energy companies such as Shell, Chevron and BP are working with governments to introduce the first fleets of hydrogen vehicles, along with small refueling networks in California, the northeastern U.S., Europe and China.

The surge of interest in hydrogen stems not only from its long-term environmental benefits but also from its potential to stimulate innovation. Auto manufacturers have embraced fuel-cell cars because they promise to become a superior consumer product. The technology offers quiet operation, rapid acceleration and low maintenance costs. Replacing internal-combustion engines with fuel cells and electric motors eliminates the need for many mechanical and hydraulic subsystems; this change gives automakers more flexibility in designing these cars and the ability to manufacture them more efficiently. What is more, fuel-cell vehicles could provide their owners with a mobile source of electricity that might be used for recreational or business purposes. During periods of peak power usage, when electricity is most expensive, fuel-cell cars could also act as distributed generators, providing relatively cheap supplemental power for offices or homes while parked nearby.

Automakers, however, must address several technical and cost issues to make fuel-cell cars more appealing to consumers. A key component of the automotive fuel cell is the proton-exchange membrane (PEM), which separates the hydrogen fuel from the oxygen. On one side of the membrane, a catalyst splits the hydrogen atoms into protons and electrons; then the protons cross the membrane and combine with oxygen atoms on the other side. Manufacturers have reduced the weight and volume of PEM fuel cells so that they easily fit inside a compact car. But the membranes degrade with use--current automotive PEM fuel cells last only about 2,000 hours, less than half the 5,000-hour lifetime needed for commercial vehicles. Companies are developing more durable membranes, however, and in late 2005 researchers at 3M, the corporation best known for Scotch tape and Post-it notes, reported new designs that might take fuel cells to 4,000 hours and beyond within the next five years.

Another big challenge is reducing the expense of the fuel cells. Today's fuel-cell cars are handmade specialty items that cost about $1 million apiece. Part of the reason for the expense is the small scale of the test fleets; if fuel-cell cars were mass-produced, the cost of their propulsion systems would most likely drop to a more manageable $6,000 to $10,000. That price is equivalent to $125 per kilowatt of engine power, which is about four times as high as the $30-per-kilowatt cost of a comparable internal-combustion engine. Fuel cells may require new materials and manufacturing methods to reach parity with gasoline engines. Car companies may also be able to lower costs by creatively redesigning the vehicles to fit the unique characteristics of the fuel cell. GM officials have stated that fuel-cell cars might ultimately become less expensive than gasoline vehicles because they would have fewer moving parts and a more flexible architecture.

Automobile engineers must also figure out how to store enough hydrogen in a fuel-cell car to ensure a reasonable driving range--say, 300 miles. Storing hydrogen in its gaseous state requires large, high-pressure cylinders. Although liquid hydrogen takes up less space, it must be supercooled to temperatures below -253 degrees Celsius (-423 degrees Fahrenheit). Automakers are exploring the use of metal hydride systems that adsorb hydrogen under pressure, but these devices tend to be heavy (about 300 kilograms). Finding a better storage method is a major thrust of hydrogen R&D worldwide. In the absence of a breakthrough technology, most fuel-cell vehicles today opt for the simplicity of storing the hydrogen as a compressed gas. With clever packaging and increased pressure, these cars are approaching viable travel ranges without compromising trunk space or vehicle weight. In 2005 GM, Honda and Toyota demonstrated compact fuel-cell cars with a 300-mile range using hydrogen gas compressed at 70 megapascals. (Atmospheric pressure at sea level is about 0.1 megapascal.)

Finally, safety is a necessary precondition for introducing any new fuel. Although hydrogen is flammable, it has a higher ignition temperature than gasoline and disperses in the air much more quickly, reducing the risk of fire. On the downside, a much wider range of concentrations of hydrogen is flammable, and a hydrogen flame is barely visible. Oil refineries, chemical plants and other industrial facilities already handle vast quantities of hydrogen without incident, and with proper engineering it can be made safe for consumer applications as well. The U.S. Department of Energy and other groups are currently developing safety codes and standards for hydrogen fuel.

Once hydrogen cars are introduced, how soon could they capture a large share of the market and start to significantly reduce carbon emissions and oil use? Because cars last about 15 years, it would take at least that long to switch over the entire fleet. Typically after a new automotive technology undergoes precommercial research, development and demonstration, it is introduced to the market in a single car model and only later appears in a variety of vehicles. (For example, hybrid gas-electric engines were first developed for compact sedans and later incorporated into SUVs.) Costs generally fall as production volumes increase, making the innovation more attractive. It can take 25 to 60 years for a new technology to penetrate a sizable fraction of the fleet. Although fundamental research on hybrid vehicles began in the 1970s, it was not until 1993 that Toyota began development of the Prius hybrid. Initial sales began in late 1997, but eight years later hybrid models from several manufacturers still accounted for only 1.2 percent of new vehicle sales in the U.S.

Harvesting Hydrogen
LIKE ELECTRICITY, hydrogen must be produced from some energy source. Currently the vast majority of hydrogen is obtained from the high-temperature processing of natural gas and petroleum. Oil refineries use hydrogen to purify petroleum-derived fuels, and chemical manufacturers employ the gas to make ammonia and other compounds. Hydrogen production now consumes 2 percent of global energy, and its share is growing rapidly. If all this hydrogen were devoted to fuel-cell cars, it would power about 150 million vehicles, or about 20 percent of the world's fleet. Although most hydrogen is produced and immediately used inside refineries or chemical plants, some 5 to 10 percent is delivered to distant locations by truck or pipeline. In the U.S. this delivery system carries enough energy to fuel several million cars, and it could serve as a springboard to a hydrogen economy.

Making hydrogen from fossil fuels, however, generates carbon dioxide as a by-product. If hydrogen were produced from natural gas, the most common method today, and used in an efficient fuel-cell car, the total greenhouse gas emissions would work out to be about 110 grams per kilometer driven. This amount is somewhat less than the total emissions from a gasoline hybrid vehicle (150 grams per kilometer) and significantly less than those from today's conventional gasoline cars (195 grams per kilometer).

The ultimate goal, though, is to produce hydrogen with little or no greenhouse gas emissions. One option is to capture the carbon dioxide emitted when extracting hydrogen from fossil fuels and inject it deep underground or into the ocean. This process could enable large-scale, clean production of hydrogen at relatively low cost, but establishing the technical feasibility and environmental safety of carbon sequestration will be crucial. Another idea is biomass gasification--heating organic materials such as wood and crop wastes so that they release hydrogen and carbon monoxide. (This technique does not add greenhouse gases to the atmosphere, because the carbon emissions are offset by the carbon dioxide absorbed by the plants when they were growing.) A third possibility is the electrolysis of water using power generated by renewable energy sources such as wind turbines or solar cells.

Although electrolysis and biomass gasification face no major technical hurdles, the current costs for producing hydrogen using these methods are high: $6 to $10 per kilogram. (A kilogram of hydrogen has about the same energy content as a gallon of gasoline, but it will propel a car several times as far because fuel cells are more efficient than conventional gasoline engines.) According to a recent assessment by the National Research Council and the National Academy of Engineering, however, future technologies and large-scale production and distribution could lower the price of hydrogen at the pump to $2 to $4 per kilogram. In this scenario, hydrogen in a fuel-cell car would cost less per kilometer than gasoline in a conventional car today.

Nuclear energy could also provide the power for electrolysis, although producing hydrogen this way would not be significantly cheaper than using renewable sources. In addition, nuclear plants could generate hydrogen without electrolysis: the intense heat of the reactors can split water in a thermochemical reaction. This process might produce hydrogen more cheaply, but its feasibility has not yet been proved. Moreover, any option involving nuclear power has the same drawbacks that have dogged the nuclear electric power industry for decades: the problems of radioactive waste, proliferation and public acceptance.

A New Energy Infrastructure
BECAUSE THE U.S. has such rich resources of wind, solar and biomass energy, making large amounts of clean, inexpensive hydrogen will not be so difficult. The bigger problem is logistics: how to deliver hydrogen cheaply to many dispersed sites. The U.S. currently has only about 100 small refueling stations for hydrogen, set up for demonstration purposes. In contrast, the country has 170,000 gasoline stations. These stations cannot be easily converted to hydrogen; the gas is stored and handled differently than liquid fuels such as gasoline, requiring alternative technologies at the pump.

The need for a new infrastructure has created a "chicken and egg" problem for the incipient hydrogen economy. Consumers will not buy hydrogen vehicles unless fuel is widely available at a reasonable price, and fuel suppliers will not build hydrogen stations unless there are enough cars to use them. And although the National Research Council's study projects that hydrogen will become competitive with gasoline once a large distribution system is in place, hydrogen might cost much more during the early years of the transition.

One strategy for jump-starting the changeover is to first focus on fleet vehicles--local delivery vans, buses and trucks-that do not require an extensive refueling network. Marine engines and locomotives could also run on hydrogen, which would eliminate significant emissions of air pollutants. Hydrogen fuel cells might power small vehicles that now use electric batteries, such as forklifts, scooters and electric bikes. And fuel cells could also be used in stationary power production: for example, they could generate electricity for police stations, military bases and other customers that do not want to rely solely on the power grid. These niche markets could help bring down the cost of fuel cells and encourage energy companies to build the first commercial hydrogen stations.

To make a substantial dent in global oil use and greenhouse gas emissions, however, hydrogen fuel will have to succeed in passenger vehicle markets. Researchers at the University of California, Davis, have concluded that 5 to 10 percent of urban service stations (plus a few stations connecting cities) must offer hydrogen to give fuel-cell car owners roughly the same convenience enjoyed by gasoline customers. GM has estimated that providing national coverage for the first million hydrogen vehicles in the U.S. would require some 12,000 hydrogen stations in cities and along interstates, each costing about $1 million. Building a full-scale hydrogen system serving 100 million cars in the U.S. might cost several hundred billion dollars, spent over decades. This estimate counts not only the expense of building refueling stations but also the new production and delivery systems that will be needed if hydrogen becomes a popular fuel.

Those numbers may sound daunting, but the World Energy Council projects that the infrastructure costs of maintaining and expanding the North American gasoline economy over the next 30 years will total $1.3 trillion, more than half of which will be spent in oil-producing countries in the developing world. Most of these costs would go toward oil exploration and production. About $300 billion would be for oil refineries, pipelines and tankers--facilities that could eventually be replaced by a hydrogen production and delivery system. Building a hydrogen economy is costly, but so is business as usual.

Furthermore, there are several ways to deliver hydrogen to vehicles. Hydrogen can be produced regionally in large plants, then stored as a liquid or compressed gas, and distributed to refueling stations by truck or gas pipeline. It is also possible to make hydrogen locally at stations--or even in homes--from natural gas or electricity. In the early stages of a hydrogen economy, when the number of fuel-cell vehicles is relatively small, truck delivery or on-site production at refueling stations might be the most economical options. But once a large hydrogen demand is established--say, 25 percent of all the cars in a large city--a regional centralized plant with pipeline delivery offers the lowest cost. Centralized hydrogen production also opens the way for carbon sequestration, which makes sense only at large scales.

In many respects, hydrogen is more like electricity than gasoline. Because hydrogen is more costly to store and transport than gasoline, energy companies will most likely produce the fuel all over the country, with each generation plant serving a regional market. What is more, the supply pathways will vary with location. A hydrogen economy in Ohio--which has plentiful coal and many suitable sites for carbon dioxide sequestration--might look entirely different from one in the Pacific Northwest (which has low-cost hydropower) or one in the Midwest (which can rely on wind power and biofuels). A small town or rural area might rely on truck delivery or onsite production, whereas a large, densely populated city might use a pipeline network to transport hydrogen.

Developing a hydrogen economy will certainly entail some financial risks. If an energy company builds giant production or distribution facilities and the fuel-cell market grows more slowly than expected, the company may not be able to recoup its investments. This dilemma is sometimes called the "stranded asset" problem. The energy industry can minimize its risk, though, by adding hydrogen supply in small increments that closely follow demand. For example, companies could build power plants that generate both electricity and a small stream of hydrogen for the early fuel-cell cars. To distribute the hydrogen, the companies could initially use truck delivery and defer big investments such as pipelines until a large, established demand is in place.

The First Steps
THE ROAD TO a hydrogen transportation system actually consists of several parallel tracks. Raising fuel economy is the essential first step. Developing lightweight cars, more efficient engines and hybrid electric drivetrains can greatly reduce carbon emissions and oil use over the next few decades. Hydrogen and fuel cells will build on this technical progression, taking advantage of the efficiency improvements and the increasing electrification of the vehicles.

The development of the hydrogen fuel infrastructure will be a decades-long process moving in concert with the growing market for fuel-cell vehicles. Through projects such as the California Hydrogen Highways Network and HyWays in Europe, energy companies are already providing hydrogen to test fleets and demonstrating refueling technologies. To enable fuel-cell vehicles to enter mass markets in 10 to 15 years, hydrogen fuel must be widely available at a competitive price by then. Concentrating hydrogen projects in key regions such as southern California or the Northeast corridor might help hasten the growth of the fuel-cell market and reduce the cost of infrastructure investments.

In the near term, the bulk of the hydrogen fuel will most likely be extracted from natural gas. Fueling vehicles this way will cut greenhouse gas emissions only modestly compared with driving gasoline hybrids; to realize hydrogen's full benefits, energy companies must either make the gas from zero-carbon energy sources or sequester the carbon by-products. Once hydrogen becomes a major fuel--say, in 2025 or beyond--governments should phase in requirements for zero or near-zero emissions in its production. And in the meantime, policymakers should encourage the ongoing efforts to develop clean-power technologies such as wind, solar, biomass gasification and carbon sequestration. The shift to a hydrogen economy can be seen as part of a broader move toward lower-carbon energy.

Although the transition may take several decades, hydrogen fuel-cell vehicles could eventually help protect the global climate and reduce America's reliance on foreign oil. The vast potential of this new industry underscores the importance of researching, developing and demonstrating hydrogen technologies now, so they will be ready when we need them.

OPTIONS FOR A HYDROGEN INFRASTRUCTURE
Energy companies could manufacture and distribute hydrogen fuel in many ways. In the near term, the most likely option is extracting hydrogen from natural gas, either in centralized reformers that supply fueling stations by delivery truck or in smaller on-site reformers located at the stations. The fueling stations could also use electricity from the power grid to make hydrogen by electrolyzing water. All these options, however, would produce greenhouse gas emissions (assuming that fossil fuels are used to make the electricity).

In the long term, policymakers should encourage cleaner methods. Advanced power plants could extract hydrogen from coal and bury the carbon dioxide deep underground. Wind turbines and other renewable energy sources could provide the power for electrolysis. And high-temperature steam from nuclear reactors could generate hydrogen through the thermochemical splitting of water.

HURDLES FOR HYDROGEN
One of the challenges facing fuel-cell cars is extending their range. The U.S. Department of Energy's National Renewable Energy Laboratory recently measured the ranges of 59 fuel-cell cars made by four industry teams. Even the best-performing team fell short of the 300-mile range needed for a commercial vehicle. Another challenge is lowering the price of hydrogen fuel. Making hydrogen from renewable energy sources such as wind, solar and biomass power is currently too expensive, but future technologies could make zero-emissions production more affordable.

THE MANY USES OF HYDROGEN
Because transporting hydrogen over long distances would be costly, each generation plant would serve the surrounding region. The first users would most likely include fleet vehicles such as trucks and small vehicles that now use electric batteries (for example, forklifts at a warehouse). Hydrogen fuel cells could also power marine engines and provide supplemental electricity for office buildings. The owners of fuel-cell cars could stop at hydrogen stations or even generate their own hydrogen at home using the power from solar arrays.

OVERVIEW

• Hydrogen fuel-cell cars could become commercially feasible if automakers succeed in developing safe, inexpensive, durable models that can travel long distances before refueling.


• Energy companies could produce large amounts of hydrogen at prices competitive with gasoline, but building the infrastructure of distribution will be costly.

MORE TO EXPLORE
The Hydrogen Economy: Opportunities, Costs, Barriers, and R&D Needs. National Research Council and the National Academy of Engineering. National Academies Press, 2004. Available online at www.nap.edu/catalog.php?record%26lowbar;id=10922#toc

The Hydrogen Energy Transition: Cutting Carbon from Transportation. Edited by Daniel Sperling and James S. Cannon. Elsevier, 2004.

The Hype about Hydrogen: Fact and Fiction in the Race to Save the Climate. Joseph J. Romm. Island Press, 2005.

More information about hydrogen fuel-cell technologies and demonstration programs can be found online at http://hydrogen.its.ucdavis.edu/, www.eere.energy.gov/hydrogenandfuelcells/, www.h2mobility.org/ and www.iphe.net/NewAtlas/atlas.htm

By: Ogden, Joan, Scientific American, 00368733, Sep2006

Sleeping with Cannibals

By: Raffaele, Paul, Smithsonian, Sep2006

Our intrepid reporter gets up close and personal, with remote New Guinea natives who say they still eat their fellow tribesmen

For days I've been slogging through a rain-soaked jungle in Indonesian New Guinea, on a quest to visit members of the Korowai tribe, among the last people on earth to practice cannibalism. Soon after first light this morning I boarded a pirogue, a canoe hacked out of a tree trunk, for the last stage of the journey, along the twisting Ndeiram Kabur River. Now the four paddlers bend their backs with vigor, knowing we will soon make camp for the night.

My guide, Kornelius Kembaren, has traveled among the Korowai for 13 years. But even he has never been this far upriver, because, he says, some Korowai threaten to kill outsiders who enter their territory Some clans are said to fear those of us with pale skin, and Kembaren says many Korowai have never laid eyes on a white person. They call outsiders laleo ("ghost-demons").

Suddenly screams erupt from around the bend. Moments later, I see a throng of naked men brandishing bows and arrows on the riverbank. Kembaren murmurs to the boatmen to stop paddling. "They're ordering us to come to their side of the river," he whispers to me. "It looks bad, but we can't escape. They'd quickly catch us if we tried."

As the tribesmen's uproar bangs at my ears, our pirogue glides toward the far side of the river. "We don't want to hurt you," Kembaren shouts in Bahasa Indonesia, which one of our boatmen translates into Korowai. "We come in peace." Then two tribesmen slip into a pirogue and start paddling toward us. As they near, I see that their arrows are barbed. "Keep calm," Kembaren says softly.

CANNIBALISM was practiced among prehistoric human beings, and it lingered into the 19th century in some isolated South Pacific cultures, notably in Fiji. But today the Korowai are among the very few tribes believed to eat human flesh. They live about 100 miles inland from the Arafura Sea, which is where Michael Rockefeller, a son of then-New York governor Nelson Rockefeller, disappeared in 1961 while collecting artifacts from another Papuan tribe; his body was never found. Most Korowai still live with little knowledge of the world beyond their homelands and frequently feud with one another. Some are said to kill and eat male witches they call khakhua.

The island of New Guinea, the second largest in the world after Greenland, is a mountainous, sparsely populated tropical landmass divided between two countries: the independent nation of Papua New Guinea in the east, and the Indonesian provinces of Papua and West Irian Jaya in the west. The Korowai live in southeastern Papua.

My journey begins at Bali, where I catch a flight across the Banda Sea to the Papuan town of Timika; an American mining company's subsidiary, PT Freeport Indonesia, operates the world's largest copper and gold mine nearby The Free Papua Movement, which consists of a few hundred rebels equipped with bows and arrows, has been fighting for independence from Indonesia since 1964. Because Indonesia has banned foreign journalists from visiting the province, I entered as a tourist.

After a stopover in Timika, our jet climbs above a swampy marsh past the airport and heads toward a high mountain. Beyond the coast, the sheer slopes rise as high as 16,500 feet above sea level and stretch for 400 miles. Waiting for me at Jayapura, a city of 200,000 on the northern coast near the border with Papua New Guinea, is Kembaren, 46, a Sumatran who came to Papua seeking adventure 16 years ago. He first visited the Korowai in 1993, and has come to know much about their culture, including some of their language. He is clad in khaki shorts and trekking boots, and his unflinching gaze and rock-hard jaw give him the look of a drill sergeant.

The best estimate is that there are some 4,000 Korowai. Traditionally, they have lived in treehouses, in groups of a dozen or so people in scattered clearings in the jungle; their attachment to their treehouses and surrounding land lies at the core of their identity, Smithsonian Institution anthropologist Paul Taylor noted in his 1994 documentary film about them, Lords of the Garden. Over the past few decades, however, some Korowai have moved to settlements established by Dutch missionaries, and in more recent years, some tourists have ventured into Korowai lands. But the deeper into the rain forest one goes, the less exposure the Korowai have had to cultures alien to their own.

After we fly from Jayapura southwest to Wamena, a jumping-off point in the Papuan highlands, a wiry young Korowai approaches us. In Bahasa Indonesia, he says that his name is Boas and that two years ago, eager to see life beyond his treehouse, he hitched a ride on a charter flight from Yaniruma, a settlement at the edge of Korowai territory. He has tried to return home, he says, but no one will take him. Boas says a returning guide has told him that his father was so upset by his son's absence that he has twice burned down his own treehouse. We tell him he can come with us.

The next morning eight of us board a chartered Twin Otter, a workhorse whose short takeoff and landing ability will get us to Yaniruma. Once we're airborne, Kembaren shows me a map: spidery lines marking lowland rivers and thousands of square miles of green jungle. Dutch missionaries who came to convert the Korowai in the late 1970s called it "the hell in the south."

After 90 minutes we come in low, following the snaking Ndeiram Kabur River. In the jungle below, Boas spots his father's treehouse, which seems impossibly high off the ground, like the nest of a giant bird. Boas, who wears a daisy-yellow bonnet, a souvenir of "civilization," hugs me in gratitude, and tears trickle down his cheeks.

At Yaniruma, a line of stilt huts that Dutch missionaries established in 1979, we thump down on a dirt strip carved out of the jungle. Now, to my surprise, Boas says he will postpone his homecoming to continue with us, lured by the promise of adventure with a laleo, and he cheerfully lifts a sack of foodstuffs onto his shoulders. As the pilot hurls the Twin Otter back into the sky, a dozen Korowai men hoist our packs and supplies and trudge toward the jungle in single file bound for the river Most carry bows and arrows.

THE REV. JOHANNES VELDHUIZEN, a Dutch missionary with the Mission of the Reformed Churches, first made contact with the Korowai in 1978 and dropped plans to convert them to Christianity. "A very powerful mountain god warned the Korowai that their world would be destroyed by an earthquake if outsiders came into their land to change their customs," he told me by phone from the Netherlands a few years ago. "So we went as guests, rather than as conquerors, and never put any pressure on the Korowai to change their ways." The Rev. Gerrit van Enk, another Dutch missionary and co-author of The Korowai of Irian Jaya, coined the term "pacification line" for the imaginary border separating Korowai clans accustomed to outsiders from those farther north. In a separate phone interview from the Netherlands, he told me that he had never gone beyond the pacification line because of possible danger from Korowai clans there hostile to the presence of laleo in their territory.

As we pass through Yaniruma, I'm surprised that no Indonesian police officer demands to see the government permit issued to me allowing me to proceed. "The nearest police post is at Senggo, several days back along the river," Kembaren explains. "Occasionally a medical worker or official comes here for a few days, but they're too frightened to go deep into Korowai territory."

Entering the Korowai rain forest is like stepping into a giant watery cave. With the bright sun overhead I breathe easily, but as the porters push through the undergrowth, the tree canopy's dense weave plunges the world into a verdant gloom. The heat is stifling and the air drips with humidity. This is the haunt of giant spiders, killer snakes and lethal microbes. High in the canopy, parrots screech as I follow the porters along a barely visible track winding around rain-soaked trees and primeval palms. My shirt clings to my back, and I take frequent swigs at my water bottle. The annual rainfall here is around zoo inches, making it one of the wettest places on earth. A sudden downpour sends raindrops spearing through gaps in the canopy, but we keep walking.

The local Korowai have laid logs on the mud, and the barefoot porters cross these with ease. But, desperately trying to balance as I edge along each log, time and again I slip, stumble and fall into the sometimes waist-deep mud, bruising and scratching my legs and arms. Slippery logs as long as ten yards bridge the many dips in the land. Inching across like a tightrope walker, I wonder how the porters would get me out of the jungle were I to fall and break a leg. "What the hell am I doing here?" I keep muttering, though I know the answer: I want to encounter a people who are said to still practice cannibalism.

Hour melts into hour as we push on, stopping briefly now and then to rest. With night near, my heart surges with relief when shafts of silvery light slip through the trees ahead: a clearing. "It's Manggel," Kembaren says-- another village set up by Dutch missionaries. "We'll stay the night here."

Korowai children with beads about their necks come running to point and giggle as I stagger into the village-several straw huts perched on stilts and overlooking the river. I notice there are no old people here. "The Korowai have hardly any medicine to combat the jungle diseases or cure battle wounds, and so the death rate is high," Kembaren explains. "People rarely live to middle age." As van Enk writes, Korowai routinely fall to interclan conflicts; diseases, including malaria, tuberculosis, elephantiasis and anemia, and what he calls "the khakhua complex." The Korowai have no knowledge of the deadly germs that infest their jungles, and so believe that mysterious deaths must be caused by khakhua, or witches who take on the form of men.

After we eat a dinner of river fish and rice, Boas joins me in a hut and sits cross-legged on the thatched floor, his dark eyes reflecting the gleam from my flashlight, our only source of light. Using Kembaren as translator, he explains why the Korowai kill and eat their fellow tribesmen. It's because of the khakhua, which comes disguised as a relative or friend of a person he wants to kill. "The khakhua eats the victim's insides while he sleeps," Boas explains, "replacing them with fireplace ash so the victim does not know he's being eaten. The khakhua finally kills the person by shooting a magical arrow into his heart." When a clan member dies, his or her male relatives and friends seize and kill the khakhua. "Usually; the [dying] victim whispers to his relatives the name of the man he knows is the khakhua," Boas says. "He may be from the same or another treehouse."

I ask Boas whether the Korowai eat people for any other reason or eat the bodies of enemies they've killed in battle. "Of course not," he replies, giving me a funny look. "We don't eat humans, we only eat khakhua."

The killing and eating of khakhua has reportedly declined among tribespeople in and near the settlements. Rupert Stasch, an anthropologist at Reed College in Portland, Oregon, who has lived among the Korowai for 16 months and studied their culture, writes in the journal Oceania that Korowai say they have "given up" killing witches partly because they were growing ambivalent about the practice and partly in reaction to several incidents with police. In one in the early '90s, Stasch writes, a Yaniruma man killed his sister's husband for being a khakhua. The police arrested the killer, an accomplice and a village head. "The police rolled them around in barrels, made them stand overnight in a leech-infested pond, and forced them to eat tobacco, chili peppers, animal feces, and unripe papaya," he writes. Word of such treatment, combined with Korowais' own ambivalence, prompted some to limit witch-killing even in places where police do not venture.

Still, the eating of khakhua persists, according to my guide, Kembaren. "Many khakhua are murdered and eaten each year," he says, citing information he says he has gained from talking to Korowai who still live in treehouses.

ON OUR THIRD DAY OF trekking, after hiking from soon alter sunrise to dusk, we reach Yafufla, another line of stilt huts set up by Dutch missionaries. That night, Kembaren takes me to an open hut overlooking the river, and we sit by a small campfire. Two men approach through the gloom, one in shorts, the other naked save for a necklace of prized pigs' teeth and a leaf wrapped about the tip of his penis. "That's Kilikili," Kembaren whispers, "the most notorious khakhua killer." Kilikili carries a bow and barbed arrows. His eyes are empty of expression, his lips are drawn in a grimace and he walks as soundlessly as a shadow.

The other man, who turns out to be Kilikili's brother Bailom, pulls a human skull from a bag. A jagged hole mars the forehead. "It's Bunop, the most recent khakhua he killed," Kembaren says of the skull. "Bailom used a stone ax to split the skull open to get at the brains." The guide's eyes dim. "He was one of my best porters, a cheerful young man," he says.

Bailom passes the skull to me. I don't want to touch it, but neither do I want to offend him. My blood chills at the feel of naked bone. I have read stories and watched documentaries about the Korowai, but as far as I know none of the reporters and filmmakers had ever gone as far upriver as we're about to go, and none I know of had ever seen a khakhua's skull.

The fire's reflection flickers on the brothers' faces as Bailom tells me how he killed the khakhua, who lived in Yafufla, two years ago. "Just before my cousin died he told me that Bunop was a khakhua and was eating him from the inside," he says, with Kembaren translating. "So we caught him, tied him up and took him to a stream, where we shot arrows into him."

Bailom says that Bunop screamed for mercy all the way; protesting that he was not a khakhua. But Bailom was unswayed. "My cousin was close to death when he told me and would not lie," Bailom says.

At the stream, Bailom says, he used a stone ax to chop off the khakhua's head. As he held it in the air and turned it away from the body, the others chanted and dismembered Bunop's body Bailom, making chopping movements with his hand, explains: "We cut out his intestines and broke open the rib cage, chopped off the right arm attached to the right rib cage, the left arm and left rib cage, and then both legs."

The body parts, he says, were individually wrapped in banana leaves and distributed among the clan members. "But I kept the head because it belongs to the family that killed the khakhua," he says. "We cook the flesh like we cook pig, placing palm leaves over the wrapped meat together with burning hot river rocks to make steam."

Some readers may believe that these two are having me on-- that they are just telling a visitor what he wants to hear--and that the skull came from someone who died from some other cause. But I believe they were telling the truth. I spent eight days with Bailom, and everything else he told me proved factual. I also checked with four other Yafufla men who said they had joined in the killing, dismembering and eating of Bunop, and the details of their accounts mirrored reports of khakhua cannibalism by Dutch missionaries who lived among the Korowai for several years. Kembaren clearly accepted Bailom's story as fact.

Around our campfire, Bailom tells me he feels no remorse. "Revenge is part of our culture, so when the khakhua eats a person, the people eat the khakhua," he says. (Taylor, the Smithsonian Institution anthropologist, has described khakhua-eating as "part of a system of justice.") "It's normal," Bailom says. "I don't feel sad I killed Bunop, even though he was a friend."

In cannibal folklore, told in numerous books and articles, human flesh is said to be known as "long pig" because of its similar taste. When I mention this, Bailom shakes his head. "Human flesh tastes like young cassowary," he says, referring to a local ostrich-like bird. At a khakhua meal, he says, both men and women--children do not attend--eat everything but bones, teeth, hair, fingernails and toenails and the penis. "I like the taste of all the body parts," Bailom says, "but the brains are my favorite." Kilikili nods in agreement, his first response since he arrived.

When the khakhua is a member of the same clan, he is bound with rattan and taken up to a day's march away to a stream near the treehouse of a friendly clan. "When they find a khakhua too closely related for them to eat, they bring him to us so we can kill and eat him," Bailom says.

He says he has personally killed four khakhua. And Kilikili? Bailom laughs. "He says he'll tell you now the names of 8 khakhua he's killed," he replies, "and if you come to his treehouse upriver, he'll tell you the names of the other 22."

I ask what they do with the bones.

"We place them by the tracks leading into the treehouse clearing, to warn our enemies," Bailom says. "But the killer gets to keep the skull. After we eat the khakhua, we beat loudly on our treehouse wails all night with sticks" to warn other khakhua to stay away.

As we walk back to our hut, Kembaren confides that "years ago, when I was making friends with the Korowai, a man here at Yafufla told me I'd have to eat human flesh if they were to trust me. He gave me a chunk," he says. "It was a bit tough but tasted good."

That night it takes me a long time to get to sleep.

The next morning Kembaren brings to the hut a 6-year-old boy named Wawa, who is naked except for a necklace of beads. Unlike the other village children, boisterous and smiling, Wawa is withdrawn and his eyes seem deeply sad. Kembaren wraps an arm around him. "When Wawa's mother died last November--I think she had TB, she was very sick, coughing and aching--people at his treehouse suspected him of being a khakhua," he says. "His father died a few months earlier, and they believed [Wawa] used sorcery to kill them both. His family was not powerful enough to protect him at the treehouse, and so this January his uncle escaped with Wawa, bringing him here, where the family is stronger." Does Wawa know the threat he is facing? "He's heard about it from his relatives, but I don't think he fully understands that people at his treehouse want to kill and eat him, though they'll probably wait until he's older, about 14 or 15, before they try But while he stays at Yafufla, he should be safe."

Soon the porters heft our equipment and head toward the jungle. "We're taking the easy way by pirogue," Kembaren tells me. Bailom and Kilikili, each gripping a bow and arrows, have joined the porters. "They know the clans upriver better than our Yaniruma men," Kembaren explains.

Bailom shows me his arrows, each a yard-long shaft bound with vine to an arrowhead designed for a specific prey Pig arrowheads, he says, are broad-bladed; those for birds, long and narrow. Fish arrowheads are pronged, while the arrowheads for humans are each a hand's span of cassowary bone with six or more barbs carved on each side--to ensure terrible damage when cut away from the victim's flesh. Dark bloodstains coat these arrowheads.

I ask Kembaren if he is comfortable with the idea of two cannibals accompanying us. "Most of the porters have probably eaten human flesh," he answers with a smile.

KEMBAREN leads me down to the Ndeiram Kabur River, where we board a long, slender pirogue. I settle in the middle, the sides pressing against my body Two Korowai paddlers stand at the stern, two more at the bow, and we push off, steering close by the riverbank, where the water flow is slowest. Each time the boatmen maneuver the pirogue around a sandbar, the strong current in the middle of the river threatens to tip us over. Paddling upriver is tough, even for the muscular boatmen, and they frequently break into Korowai song timed to the slap of the paddles against the water, a yodeling chant that echoes along the riverbank.

High green curtains of trees woven with tangled streamers of vine shield the jungle. A siren scream of cicadas pierces the air. The day passes in a blur, and night descends quickly.

And that's when we are accosted by the screaming men on the riverbank. Kembaren refuses to come to their side of the river. "It's too dangerous," he whispers. Now the two Korowai armed with bows and arrows are paddling a pirogue toward us. I ask Kembaren if he has a gun. He shakes his head no.

As their pirogue bumps against ours, one of the men growls that laleo are forbidden to enter their sacred river, and that my presence angers the spirits. Korowai are animists, believing that powerful beings live in specific trees and parts of rivers. The tribesman demands that we give the clan a pig to absolve the sacrilege. A pig costs 350,000 rupiahs, or about $40. It's a Stone Age shakedown. I count out the money and pass it to the man, who glances at the Indonesian currency and grants us permission to pass.

What use is money to these people? I ask Kembaren as our boatmen paddle to safety upriver. "It's useless here," he answers, "but whenever they get any money, and that's rare, the clans use it to help pay bride prices for Korowai girls living closer to Yaniruma. They understand the dangers of incest, and so girls must marry into unrelated clans."

About an hour farther up the river, we pull up onto the bank, and I scramble up a muddy slope, dragging myself over the slippery rise by grasping exposed tree roots. Bailom and the porters are waiting for us and wearing worried faces. Bailom says that the tribesmen knew we were coming because they had intercepted the porters as they passed near their treehouses.

Would they really have killed us if we hadn't paid up? I ask Bailom, through Kembaren. Bailom nods: "They'd have let you pass tonight because they knew you'd have to return downriver. Then, they'd ambush you, some firing arrows from the riverbank and others attacking at close range in their pirogues."

The porters string all but one of the tarpaulins over our supplies. Our shelter for the night is four poles set in a square about four yards apart and topped by a tarp with open sides. Soon after midnight a downpour drenches us. The wind sends my teeth chattering, and I sit disconsolately hugging my knees. Seeing me shivering, Boas pulls my body against his for warmth. As I drift off, deeply fatigued, I have the strangest thought: this is the first time I've ever slept with a cannibal.

WE LEAVE AT FIRST LIGHT, still soaked. At midday our pirogue reaches our destination, a riverbank close by the treehouse, or khaim, of a Korowai clan that Kembaren says has never before seen a white person. Our porters arrived before us and have already built a rudimentary hut. "I sent a Korowai friend here a few days ago to ask the clan to let us visit them," Kembaren says. "Otherwise they'd have attacked us."

I ask why they've given permission for a laleo to enter their sacred land. "I think they're as curious to see you, the ghost-demon, as you are to see them," Kembaren answered.

At mid-afternoon, Kembaren and I hike 30 minutes through dense jungle and ford a deep stream. He points ahead to a treehouse that looks deserted. It perches on a decapitated banyan tree, its floor a dense latticework of boughs and strips of wood. It's about ten yards off the ground. "It belongs to the Letin clan," he says. Korowai are formed into what anthropologists call patricians, which inhabit ancestral lands and trace ownership and genealogy through the male line.

A young cassowary prances past, perhaps a family pet. A large pig, flushed from its hiding place in the grass, dashes into the jungle. "Where are the Korowai?" I ask. Kembaren points to the treehouse. "They're waiting for us."

I CAN HEAR VOICES as I climb an almost vertical pole notched with footholds. The interior of the treehouse is wreathed in a haze of smoke rent by beams of sunlight. Young men are bunched on the floor near the entrance. Smoke from hearth fires has coated the bark walls and sago-leaf ceiling, giving the hut a sooty odor. A pair of stone axes, several bows and arrows and net bags are tucked into the leafy rafters. The floor creaks as I settle cross-legged onto it.

Four women and two children sit at the rear of the treehouse, the women fashioning bags from vines and studiously ignoring me. "Men and women stay on different sides of the treehouse and have their own hearths," says Kembaren. Each hearth is made from strips of clay-coated rattan suspended over a hole in the floor so that it can be quickly hacked loose, to fall to the ground, if a fire starts to burn out of control.

A middle-aged man with a hard-muscled body and a bulldog face straddles the gender dividing line. Speaking through Boas, Kembaren makes small talk about crops, the weather and past feasts. The man grips his bow and arrows and avoids my gaze. But now and then I catch him stealing glances in my direction. "That's Lepeadon, the clan's khenmengga-abül, or 'fierce man,'" Kembaren says. The fierce man leads the clan in fights. Lepeadon looks up to the task.

"A clan of six men, four women, three boys and two girls live here," Kembaren says. "The others have come from nearby treehouses to see their first laleo."

After an hour of talk, the fierce man moves closer to me and, still unsmiling, speaks. "I knew you were coming and expected to see a ghost, but now I see you're just like us, a human," he says, as Boas translates to Kembaren and Kembaren translates to me.

A youngster tries to yank my pants off, and he almost succeeds amid a gale of laughter. I join in the laughing but keep a tight grip on my modesty. The Rev. Johannes Veldhuizen had told me that Korowai he'd met had thought him a ghost-demon until they spied him bathing in a stream and saw that he came equipped with all the requisite parts of a yanop, or human being. Korowai seemed to have a hard time understanding clothing. They call it laleo-khal, "ghost-demon skin," and Veldhuizen told me they believed his shirt and pants to be a magical epidermis that he could don or remove at will.

"We shouldn't push the first meeting too long," Kembaren now tells me as he rises to leave. Lepeadon follows us to the ground and grabs both my hands. He begins bouncing up and down and chanting, "nemayokh" ("friend"). I keep up with him in what seems a ritual farewell, and he swiftly increases the pace until it is frenzied, before he suddenly stops, leaving me breathless.

"I've never seen that before," Kembaren says. "We've just experienced something very special." It was certainly special to me. In four decades of journeying among remote tribes, this is the first time I've encountered a clan that has evidently never seen anyone as light-skinned as me. Enthralled, I find my eyes tearing up as we return to our hut.

THE NEXT MORNING four Korowai women arrive at our hut carrying a squawking green frog, several locusts and a spider they say they just caught in the jungle. "They've brought your breakfast," Boas says, smiling as his gibe is translated. Two years in a Papuan town has taught him that we laleo wrinkle our noses at Korowai delicacies. The young women have circular scars the size of large coins running the length of their arms, around the stomach and across their breasts. "The marks make them look more beautiful," Boas says.

He explains how they are made, saying circular pieces of bark embers are placed on the skin. It seems an odd way to add beauty to the female form, but no more bizarre than tattoos, stiletto-heel shoes, Botox injections or the not-so-ancient Chinese custom of slowly crushing infant girls' foot bones to make their feet as small as possible.

Kembaren and I spend the morning talking to Lepeadon and the young men about Korowai religion. Seeing spirits in nature, they find belief in a single god puzzling. But they too recognize a powerful spirit, named Ginol, who created the present world after having destroyed the previous four. For as long as the tribal memory reaches back, elders sitting around fires have told the younger ones that white-skinned ghost-demons will one day invade Korowai land. Once the laleo arrive, Ginol will obliterate this fifth world. The land will split apart, there will be fire and thunder, and mountains will drop from the sky. This world will shatter, and a new one will take its place. The prophecy is, in a way, bound to be fulfilled as more young Korowai move between their treehouses and downriver settlements, which saddens me as I return to our hut for the night.

The Korowai, believing that evil spirits are most active at night, usually don't venture out of their treehouses after the sun sets. They divide the day into seven distinct periods--dawn, sunrise, midmorning, noon, mid-afternoon, dusk and night. They use their bodies to count numbers. Lepeadon shows me how, ticking off the fingers of his left hand, then touching his wrist, forearm, elbow, upper arm, shoulder, neck, ear and the crown of the head, and moving down the other arm. The tally comes to 25. For anything greater than that, the Korowai start over and add the word laifu, meaning "turn around."

In the afternoon I go with the clan to the sago palm fields to harvest their staple food. Two men hack down a sago palm, each with a hand ax made from a fist-size chunk of hard, dark stone sharpened at one end and lashed with vine to a slim wooden handle. The men then pummel the sago pith to a pulp, which the women sluice with water to produce a dough they mold into bite-size pieces and grill.

A snake that falls from the toppling palm is swiftly killed. Lepeadon then loops a length of rattan about a stick and rapidly pulls it to and fro next to some shavings on the ground, producing tiny sparks that start a fire. Blowing hard to fuel the growing flame, he places the snake under a pile of burning wood. When the meat is charred, I'm offered a piece of it. It tastes like chicken.

On our return to the treehouse, we pass banyan trees, with their dramatic, aboveground root flares. The men slam their heels against these appendages, producing a thumping sound that travels across the jungle. "That lets the people at the treehouse know they're coming home, and how far away they are," Kembaren tells me.

My three days with the clan pass swiftly When I feel they trust me, I ask when they last killed a khakhua. Lepeadon says it was near the time of the last sago palm feast, when several hundred Korowai gathered to dance, eat vast quantities of sago palm maggots, trade goods, chant fertility songs and let the marriage-age youngsters eye one another. According to our porters, that dates the killing to just over a year ago.

Lepeadon tells Boas he wants me to stay longer, but I have to return to Yaniruma to meet the Twin Otter. As we board the pirogue, the fierce man squats by the riverside but refuses to look at me. When the boatmen push away, he leaps up, scowls, thrusts a cassowary-bone arrow across his bow, yanks on the rattan string and aims at me. After a few moments, he smiles and lowers the bow--a fierce man's way of saying goodbye.

IN MIDAFTERNOON, the boatmen steer the pirogue to the edge of a swamp forest and tie it to a tree trunk. Boas leaps out and leads the way, setting a brisk pace. After an hour's trek, I reach a clearing about the size of two football fields and planted with banana trees. Dominating it is a treehouse that soars about 75 feet into the sky. Its springy floor rests on several natural columns, tall trees cut off at the point where branches once flared out.

Boas is waiting for us. Next to him stands his father, Khanduop, a middle-aged man clad in rattan strips about his waist and a leaf covering part of his penis. He grabs my hand and thanks me for bringing his son home. He has killed a large pig for the occasion, and Bailom, with what seems to me to be superhuman strength, carries it on his back up a notched pole into the treehouse. Inside, every nook and cranny is crammed with bones from previous feasts--spiky fish skeletons, blockbuster pig jaws, the skulls of flying foxes and rats. The bones dangle even from hooks strung along the ceiling, near bundles of many-colored parrot and cassowary feathers. The Korowai believe that the décor signals hospitality and prosperity.

I meet Yakor, a tall, kindly eyed tribesman from a treehouse upriver, who squats by the fire with Khanduop, Bailom and Kilikili. Boas' mother is dead, and Khanduop, a fierce man, has married Yakor's sister. When the talk turns to khakhua meals they have enjoyed, Khanduop's eyes light up. He's dined on many khakhua, he says, and the taste is the most delicious of any creature he's ever eaten.

The next morning the porters depart for the river, carrying our remaining supplies. But before I leave, Khanduop wants to talk; his son and Kembaren translate. "Boas has told me he'll live in Yaniruma with his brother, coming back just for visits," he murmurs. Khanduop's gaze clouds. "The time of the true Korowai is coming to an end, and that makes me very sad."

Boas gives his father a wan smile and walks with me to the pirogue for the two-hour journey to Yaniruma, wearing his yellow bonnet as if it were a visa for the 21st century.

Three years earlier I had visited the Korubo, an isolated indigenous tribe in the Amazon, together with Sydney Possuelo, then director of Brazil's Department for Isolated Indians [SMITHSONIAN, April 2005]. This question of what to do with such peoples--whether to yank them into the present or leave them untouched in their jungles and traditions--had troubled Possuelo for decades. "I believe we should let them live in their own special worlds," he told me, "because once they go downriver to the settlements and see what is to them the wonders and magic of our lives, they never go back to live in a traditional way."

So it is with the Korowai. They have at most a generation left in their traditional culture--one that includes practices that admittedly strike us as abhorrent. Year by year the young men and women will drift to Yaniruma and other settlements until only aging clan members are left in the treehouses. And at that point Ginol's godly prophecy will reach its apocalyptic fulfillment, and thunder and earthquakes of a kind will destroy the old Korowai world forever.


http://freetraveler.net/

New Pathway to Pollution in Arctic

Reportedly New Scientist, one of the bonuses of global warming is the potential for new shipping routes to open up through the Arctic as ice retreats, shortening journeys by many thousands of miles. There is a downside, however. New northern passages could significantly boost levels of low-lying ozone as ship exhausts pump pollutants into the pristine environment.

Climate models indicate that the northern passages — the north-east coast of Siberia, northern Alaska and around the Canadian archipelago may be open to shipping during the summer months from around 2050 onwards. Claire Granier, from the University of Pierre and Marie Curie in Paris, France, and her colleagues calculated the likely ozone emissions associated with such a scenario, assuming that the routes would be accessible for six months of the year.

Emissions of nitrogen oxides and carbon monoxide from ships could triple ozone levels, making them comparable to those in industrialised regions today (Geophysical Research letters, DOI: 10.1029/200661026180).

"The Arctic is a very sensitive region and these very high ozone levels are likely to have a serious impact on plant life," says Ulrike Niemeier, a co-author from the Max Plank Institute for Meteorology in Hamburg, Germany.

Monday, October 09, 2006

Mosquito-Repellent Cloth

Interesting Facts about Futuristic Designs (Photos)


Nothing could be more appropriate for Delhites now, than this piece of fabric. With the city gripped by the dengue menace, a mosquito repellent cloth may help where other repellents have failed.

The fabric of this designer cloth is activated by rubbing which in turn keeps the mosquitoes away at a distance of 50 cm. Clinically tested and proven by the London School of Hygiene and Tropical Medicine, this cloth, brought out by Arnywear, can keep away not only mosquitoes but also midges, stable flies, ticks and other unwelcome insects.

Definitely better than the sticky and oily sprays and creams, this piece of cloths can be a great fashion accessory too. It comes in four different designs which you can match with your wardrobe - Aqua Blue,Khaki Stripe, Cerise-Pink and Five-O. However, the cloth is the use-and-throw type. After couple of uses they need to be disposed off.

Screaming Mobiles

Interesting Facts about Futuristic Designs (Photos)


Mobiles changed the way we communicate. From having to wait for ages for a landline connection to buying a mobile phone off the rack at rates that allows even the maid to posses one, long-distance communication has definitely become cheaper and accessible.

But along with easy communication came another menace - that of theft. Majority of mobile users will have at least one story to tell about the theft of their brand new mobile. Once stolen, there was little the user could do other than buy another one.

However, slowly this problem is being addressed and new softwares are coming up to trace the lost phone and its thief. The latest and one of the most interesting amongst them is the screaming mobile!

A new system has been developed which makes a mobile scream after it has been stolen. Security experts have devised a system, due to which, when the phone gets stolen, it triggers a high-pitched screech from the phone along with a message which reads, "This phone has been stolen." The phone is automatically disabled with the contact numbers, texts, images and emails being removed.

In the new system, Remote XT, a signal is sent to the mobile once it is reported stolen or lost, which causes it to emit an alarm similar to a scream. With this service the Mobile Industry Crime Action Forum, which is backing the project, hopes to make mobile phones less desirable items to steal and making them worthless in the hands of those who do.

Available in England, the service does come at a cost. Subscribers have to shell out Ј10 a month to avail of this service.

Talking, Thinking Computer

Interesting Facts about Futuristic Designs (Photos)


First we had the bulky PCs with their keyboards. Things began to move fast when decades later we were introduced to the mouse. Soon enough laptops, sleek monitors with LCD screens followed and have now become a common sight on most desks.

As our needs have increased it is not enough to have things at our disposal at the click of a mouse; it has to be easier still. So now freeing our hands will be, a talking and thinking computer-animated face.

Doing away with the keyword and mouse and even touch screen, will be new computer generated faces that will be programmed to understand our needs. No longer will we have to book a ticket or withdraw money from the bank by punching keys. Instead the animated-computer face will listen to our verbal instructions and take care of our requirements.

However, this computer is not out in the market yet. A team of Australian researchers are working to create it and maybe in the coming decade we'll have a animated computer face greeting us at the ATMs.

The team is using technologies like computer animation, speech recognition and computer-generated dialogue to construct the talking, thinking head that emulates face-to-face conversation. It will work on visual clues such as different mouth shapes and face _expression to understand what is being said. Further still, it will be capable of tailoring its communication to the different types of people, by accessing different databases. The team also plans to make this computer learn from its interactions with different people and improve its communication. They even intend to make it capable of giving emotional responses when the need arises.

Talk about getting personalised attention!

Robotic Cookware

Interesting Facts about Futuristic Designs (Photos)


If you are into cooking, you must realise the agony of accidentally burning a dish. No matter how much you look over it, the dish ends up getting badly burnt and fit only for the dustbin.

Where non-stick pans helped cut down on the oil as well as all the scrapings, this new cookware brought out by Vita Care, will ensure that you can safely cook without any worry of burning it up. Each Robotic Cookware pan is fitted with a RFID computer chip that has been designed specifically for that pan. While cooking, the chip sends a signal to communicate with coordinated chips in the cooktop and special recipe cards that monitor each cooking step for a particular dish.

So when you are ready to cook a dish, just scan the recipe card under the pan handle where the chip is loaded. This done, the pan will communicate with the cooktop 16 times per second, while it is cooking, to ensure that the food does not get burnt.

The cooktop and the pans utilize the magnetic field interference between the two to generate and distribute heat. Thus only the pan heats up and not the cooktop and once the pan is removed from the cooktop, the energy transfer stops.

Though a perfect solution for amateur cooks, even the experienced can do with a helping hand. However, with the dishes limited to the recipes mentioned in the card, it really needs to expand if it has to fit into the multi-cuisine culture of India.

Air Washing

Interesting Facts about Futuristic Designs (Air Washing)

A truly futuristic design, an Airwash washing machine should hopefully be a common fixture in all homes by 2020. Designed by two industrial design students from the National University of Singapore, the Airwash Washing Machine won Electrolux's Design Lab Award.

Inspired by the waterfall, nature's negative ion generator, this washing machine does not use any water or detergent. It utilizes negative ions, compressed air and deodorants to clean clothes. The atmospheric air and negative ions - a natural cleansing agent - fight the dirt and bacteria. The machine can be placed anywhere at home and not necessarily in the laundry area.

Sigh! Do we really have to wait for 14 years to get our hands on this miracle washer?

Sunday, October 08, 2006

A Go-Anywhere Tankchair

With heavy-duty treads, clever wiring and a whole lot of jury-rigging, Brad Soden made his wife a wheelchair that can conquer any terrain

Wheelchairs and camping just don't mix. But the Soden family of Parker, Arizona, is an outdoors clan. So when Brad Soden's wife, Liz, lost the use of her legs in an accident, he knew she needed something that could roll over snow, mud and brush. She needed a tank.


Tankchair (Photos)

NO EASY CHAIR: The first TankChair cost Brad Soden $25,000. He now sells custom chairs for $15,000 to $18,000 at tankchair.com.

Soden scoured the Web for parts and found ATV tracks from a company called LiteFoot. An old electric wheelchair, upgraded with a more comfortable seat for the tougher terrain, became the base, and motors from a robotics supply company would drive the heavy tracks. Computer fans would cool the system.

Next Soden set to work forging all the pieces together. He machined the tracks' fittings to mate with the chair's frame and carefully balanced the motors-at 25 pounds each, setting them in the wrong spot could compromise stability and send his wife tumbling.

The wiring proved even more challenging. Soden fried several control modules-which determine how much power goes to the tracks-trying to deliver enough juice to propel the chair.

All the effort paid off when Soden watched a joyful Liz cruise across a muddy field to see her sons' football game. Now it just needs a cupholder.


HOW IT WORKS
2 YEARS
$25,000
EASY HARD 5

SPEED: Originally 12 mph, but Soden thought that unsafe and cut it to 5 mph

CONTROL: The TankChair is steered by joystick. To make it turn on a dime, which requires extra power to drive both tracks at once, Soden had to bypass the safety mechanisms that cap the flow of amps to the treads.

RANGE: The chair can travel 10 miles over flat ground with its two 12-volt gel-cell batteries fully charged. Soden plans to use lighter spiral-cell batteries in the next model.

By: Mone, Gregory, Popular Science, Sep2006

Entertain the Queen

"Here the Milky Way is so rich that an observer hardly needs any guidance; he is sure to stumble upon interesting sights for himself." This is how Garrett Serviss describes the binocular view of Cassiopeia the Queen in his Astronomy with an Opera Glass (1888). Serviss' charming book introduced the idea that people could use binoculars to view the heavens. Of course, binoculars made back then don't compare to the quality found in even the least expensive binoculars today. But his equipment's low quality didn't deter Serviss from viewing the binocular universe from his home in Brooklyn, New York.

One of Cassiopeia's sights Serviss mentioned lies near the star Zeta (ζ) Cassiopeiae. You'll find Zeta just south of Schedar (Alpha [α] Cassiopeiae), which marks the lower-right corner of the Queen's "W" pattern. Through binoculars, 4th-magnitude Zeta's distinct aquamarine hue contrasts nicely against Schedar's orangish tint.

Zeta lies at the end of a semicircular asterism of seven fainter stars that Serviss described as an "array of stars … in a broken half-circle, which may suggest the notion of a crown." Together, they resemble a backward 3 or a miniature Corona Borealis. Because older depictions of the constellation show Zeta representing the Queen's head, "Cassiopeia's crown" seems an appropriate name for this little asterism.

Let's go deeper into the constellation by following the zigzag path along the Cassiopeia five-star "W" to Ruchbah (Delta [δ] Cassiopeiae), at its lower-left corner. Aim half a binocular field to the southwest of Ruchbah toward 5th-magnitude Phi (φ) Cassiopeiae. You'll see a second fainter star just to Phi's southwest as well as a tiny smear of dim starlight to the north. Together, they form the Owl Cluster, NGC 457. The two brightest stars mark the owl's eyes, while the fainter suns outline its body and outstretched wings. Some observers imagine a dragonfly here, while others see the movie character ET. Although most binoculars reveal the cluster, you'll probably need at least 15x to see any hint of these heavenly creatures.

Most studies indicate Phi doesn't actually belong to NGC 457, but, instead, just happens to fall along the same line of sight. Strangely enough, Phi appears to move through space in the same direction as the cluster. This usually indicates a physical association. If that's so, then at the duster's distance of 9,000 light-years, Phi would have to be an incredible 250,000 times more luminous than our Sun.

Next, let's stop by open cluster M103, located to the other side of Ruchbah. My 10x50s show this group as a small triangular patch of starlight nestled in a pretty Milky Way field. I can make out four or five separate stars here. The rest of its 170 members pool their faint light to create what looks like a tiny arrowhead. Others think M103 resembles a handheld fan.

Scan the area around M103, and you will notice the hazy glow of NGC 663 a little east of the halfway point between Ruchbah and the star Segin (Epsilon [ε] Cassiopeiae). In fact, you may see it before you even notice M103. NGC 663 looks like an unresolved blur of light through my 10x50s, while my 16x70s add a few feeble points of light.

Next month, we'll take the sky's camel for a ride down a celestial cascade. Till then, remember, two eyes are better than one!

By: Harrington, Phil, Astronomy, 2006

Living Green

An environmental lifestyle expert helps people tread lightly on Earth

The number-one question I'm always asked is, "So what exactly do you do?" That has always been tough to answer without getting a curious response. I'm an environmental lifestyle expert.

It all started in 1989 when on my 12th birthday (also Earth Day), I became an environmentalist. I was alarmed by stories of the ozone layer depleting, rain forests burning down, and whales being killed, At 12, I was naive enough to think the world was coming to an end but idealistic enough to think, "Perhaps I can change that."

I started an environmental group called Earth 2000. I figured within 11 years, I could change the world. My goal was to save the planet by the year 2000. By my 18th birthday, I had grown Earth 2000 from just seven members planting trees to 25,000 members lobbying for new environmental laws and saving historic forests from development.

I was lucky enough to get a book deal to write about my teenage experiences in running a nonprofit group. Once the book, Generation React, was published, I did a lot of magazine and newspaper interviews. A reporter from The Washington Post interviewed me over lunch. I offered to whip something together. She asked questions about the organic food I prepared and nosed around my apartment asking about furniture, paint finishes, and linens. When the story came out, it had nothing to do with my book. Instead, the Style section of the Post proclaimed me (!) a lifestyle expert.

I started to get calls from celebrities asking for my help to furnish their homes, buy cars, and dress for red-carpet events, all in an eco-friendly way. I ran with this opportunity: I wrote books on environmentally friendly lifestyles, all with innovative ideas, great style, and beautiful layouts.

There is nothing crunchy or hippie-dippy about what I do; I shatter all the stereotypes about green living. I call my style "SuperNatural": a blend of beautiful style, great and simple ideas, and new technology, all keeping the planet in mind. A flat-screen TV, for example, can be SuperNatural if it is manufactured to be as energy efficient as possible.

From my humble beginnings in the basement of my parents' home, today I lead a media company creating TV programming, a satellite radio show, and a series of books on everything from entertaining to home renovation. I remember my early crusade to save the world, and the lessons I learned then help me today. I produce everything we do with great care to make sure the content is accurate, interesting, and helpful to anyone interested in living a greener lifestyle. I personally live, breathe, and do everything I say. I constantly seek new ideas and resources and try to make SuperNatural living an evocative celebration of everyday life.

So when people ask me, "What do you do," perhaps I should just tell them, "I am trying to change the world."

HOT LINK
Learn more about Danny Seo's work at www.dannyseo.com. Danny's TV show, Simply Green, will debut on Lime in 2006. His radio show, "Simply Green with Danny Seo," is on Lime on Sirius Satellite Radio.

By: Seo, Danny, Career World

Where Do I Go With Art?

AN OLD MAGAZINE AD FOR AN ART SCHOOL USED to boast, "If you can draw this clown [or rabbit or flower or whatever picture was in the ad], you too can have a career in art!" But art school isn't the only path to a successful career in visual art. If you love fooling around with paint, clay, wood, or even a computer, you may find a future filled with color, creativity, and self-expression. No matter which medium they use, artists communicate ideas, thoughts, and feelings through their work. Art is everywhere--from the design on a soft drink can or the latest issue of a magazine to the hottest CD cover or box-office smash movie like The Incredibles. Where can you go with art? Here are just four possibilities out of thousands.

CHRISTINA CORDOVA, Sculptor
Christina Cordova, 29, lives the dream of many artists: She's a full-time, self-supporting sculptor. Her studio sits on the grounds of the Penland School of Crafts, a national center for craft education in the Blue Ridge Mountains of North Carolina, where Cordova spent three years as a resident artist. Each day she creates ceramics that are shown and sold (pieces range from $600 to $9,000) in galleries.

Cordova grew up in Puerto Rico, where she took all sorts of drawing and painting classes. But it wasn't until her last year in college that she enrolled in a "fabulous" ceramics workshop and was touched by the potential of clay. "Then I took every course I could find," she admits, finally earning a master of fine arts from the New York State College of Ceramics in 2002. Though college was a blast, it didn't quite prepare Cordova for running her own business. "That first year was like traveling an incredible but scary winding road," she says. "At first I did it all but didn't really under. stand how to be successful. Now I delegate the bookkeeping, marketing, and Web site maintenance to others [while I] do what I do best: work in my studio."

Though sales of her art generate enough income for Cordova to live on, she also teaches at Penland School of Crafts. "You have to live the life of an artist to understand the life of an artist. I was lucky enough to have mentors along the way; now maybe I can share what I know with others."

EDDIE HOLLY, Illustrator
Even as a little kid, Eddie Holly of San Diego knew his future lay in illustration. "I was always doodling cartoon characters, and all I wanted was for someone to pay me to draw," he says. Holly got his wish. Today, the 28-year-old is a graphic designer and illustrator who draws … and draws … and draws.

After a stint in the U.S. Navy, he opted for a degree in digital arts from the Art Institute of San Diego. Since then, Holly has illustrated comic strips, drawn political cartoons, and served as an animation timer on the Cartoon Network's Megas XLR. Now he creates designs and characters, including King Kong, Spider-Man, X-Men, and the Fantastic Four, for several clothing brands.

"I love the fact that I'm working on something new every day," he says. "It's the biggest rush to go down to the warehouse and see samples of the shirts I've created or learn that a gazillion people ordered my design." For now, Holly reinvents someone else's characters (like giving the Spidey guy a new action move), but he'd really like to create his own cartoon world and bring it to life as a movie.

His advice to future animators: "Practice, practice, and practice. Draw as much as you can. Take classes and keep focused on the basics. Anyone can learn to use a computer, but you can't be taught drawing skills."

ALEXANDREA CATTANEA, Museum Conservator
Just call her work the CSI of the art world. Alexandrea Cattanea is a conservation assistant in the costumes and textiles department of the Philadelphia Museum of Art. Cattanea, 24, studies and evaluates each piece in a collection. She then develops and implements ways of protecting each item from damage. "The real job is history, science, and archiving," says Cattanea, who majored in crafts at the University of the Arts in Philadelphia. With 22,000 objects in the museum's collection, Cattanea may vacuum an ancient tapestry one day and freeze a 17th-century apron to kill off any microscopic bugs the next. "I was once asked to work on 85 beige baby bonnets and thought, 'You gotta be kidding me!' But each one had a story--the lace, the embroidery, the person who made it," she says. "Finding the history of a piece is fascinating, like digging up secrets." Then there's the secret tool of conservators--spit. Yes, Cattanea says, a little human saliva--eew--works wonders when cleaning certain objects because it's a bit more abrasive than water.

Her museum gig allows Cattanea time to make her own art. Right now she's into embroidery portraits. Still, she says, artists can't define themselves by their medium. "Art isn't just painting or sculpture. Artists are always seeking new inspiration. Luckily, I work in a place that never fails to inspire."

BLAKE VAN ROEKEL, Glass Artist
It was supposed to be Blake Van Reekel's big moment. The glass artist and owner of Magma, a handcrafted-jewelry business, was set to demonstrate her glass bead-making technique to spur sales. As 40 people gathered to watch, Van Roekel, 29, lit her portable propane torch. Whoosh! She had ignition. "Only problem … the torch never got hot enough to melt the glass rods, meaning I could only produce ugly black blobs," she recalls. Sympathetic customers bought her stunning jewelry anyway, and the word spread. Soon Van Roekel's artistic passion became a successful retail business, selling bracelets, necklaces, and earrings from her showroom/ studio in Portland, Ore. "I love the independence and freedom. It's exciting to work for yourself and fun knowing you are doing it all on your own," she says.

In elementary school art class, Van Roekel was never one to stay within the lines. "I always sat in the back and did my own thing," she confesses. When her 10th-grade art teacher wrote on one of her paintings, "I'd really like to see your art in a gallery," Van Roekel was inspired to become a full-time artist. She earned a degree in art history at Colorado College, but her glass beadwork started out as a hobby. Today, Magma jewelry is sold in shops and galleries throughout the Northwest.

But not all of Van Roekel's time is spent in the studio. "About 35 percent is creative and 65 percent is marketing, selling, filling orders, and getting ready for weekend arts-and-crafts fairs. But I love the fact that I'm creating original objects that people can wear. I get to sell a piece of me."

Portraits of the Artists As Young Men and Women
Career World asked visual arts students at the Denver School of the Arts to tell us where they are going with art.

Philip Thompson, 18: Thompson wants to study fine arts, then "own my own art studio where I could make my own stuff and also teach ceramics to other people. It will be great to see my work sold in galleries." Amy Reimberger, 17: "I see myself working as a graphic artist, maybe magazine, advertising, or package design. Someone has to come up with the ideas on paper before they are finished on a computer." Leah Wolberg, 17: "Art can be useful in all sorts of careers. For me, it will help with a career in engineering. Even if you design a new camera, you need to design something that looks good." Jennifer Johnson, 17: Cosmetology school is in Johnson's plans. "Not only do I want to become a body painter but [I want to] create my own line of cosmetics. I love color--making it, blending it, creating new ones." Kelly Olnowich, 17: Olnowich plans a future with a camera in hand. "I'd like to be a photojournalist for a magazine like National Geographic, Art makes me look at the world differently, and I hope it can show others a different perception of life." Patricio Chavez, 18: "My dream is to go to art school and then just create. Already I'm designing wearable art, like T-shirts. But oil paint, acrylics, watercolor--it doesn't matter; as long as I can make art, I'll be happy."

By: Daily, Laura, Career World, 07441002, Apr/May2006

Totally Cool!

Meet five people who have found their dream jobs. What's yours?

HELP WANTED: Inventor. Must enjoy eating ice cream-all kinds of ice cream, and plenty of it. Must have an open mind and a knack for bringing flavors together in a delicious, creative way.

That description may sound way out there, but it's for a real job. In fact, a lot of very cool careers are out there, says teen author Nora Coon. Cool careers are all about spending your life working at dream jobs that you could find exciting, fun, and lucrative.

"You can't really say there's one job for everybody," she says. "But a supercool job is one that lets you make use of your talents, a job that you wake up and you really want to do."

Nora knows. Though she's only 16, she's already written the book on supercool careers. Literally. She's the author of Teen Dream Jobs, a book she dreamed up as an intern at Beyond Words Publishing in Hillsboro, Ore.

"I had friends who couldn't get jobs or were doing stuff like babysitting," she recalls. "I thought there should be a book out there telling teenagers they could do jobs they were actually interested in."

Some people think they can't get paid to do something they love, that work, by its nature, must be boring. Nora wants her peers to know that's not true. "Do what you love," she says. "That's my motto."

Nora is doing what she loves: writing books. In addition to Teen Dream Jobs, she authored It's Your Rite and is working on a third book, Diabetes Survival Guide. "I've liked writing since basically I learned how to read, and no one ever told me that writing books is something you didn't do until you were older," she explains. "I figured, well, they pay people to write books, so why shouldn't I get paid to write books?"

The definition of cool is different for every person. Like Nora, many people find a way to make a living doing exactly what they love. But cool can also be defined by how other people perceive the job. If a job kindles your imagination or makes you wish you were doing the same thing, then it's probably pretty cool.

INVENTING ICE-CREAM FLAVORS
WHO: Derek Spots, 28, senior product developer in research and development for Ben & Jerry's in Burlington, Vt.

SCHOOL DAYS: B.S. in food science, University of Wisconsin

WHAT HE DOES: Spors invents new ice-cream flavors. He eats a variety of desserts, brainstorms, researches food science technology and innovations, and creates ice-cream test batches.

HOW PEOPLE REACT TO HIS JOB: The conversation goes something like this:

Guy on-an airplane: "What do you do?"

Spors: "I work for Ben & Jerry's."

Guy: "Oh, that sounds like fun. What do you do?"

Spors: "I come up with new flavors."

Guy: "Really? That's got to be the best job in the world! I've got a flavor idea. Have you ever tried …?"

COOL FACTOR: "Going to the grocery store and seeing someone buy a pint of ice cream I developed. Ice cream makes people happy, and it's satisfying to know your work makes people happy."

HIS SPECIALTY: "Taking things people say won't work and making them work. Never say something can't be done."

BEST FLAVOR HE'S DEVELOPED: "My favorite is a new flavor called In a Crunch. It's peanut butter ice cream with milk chocolate-coated peanuts and a crispy fudge swirl that's like a melted candy bar swirled in the pint, But my favorite flavor will always be vanilla. When you work with crazy concoctions all day, you really start to appreciate the simplicity and pureness of just good ice cream."

CAUTION: "If you don't like math, food science isn't the way to go."

SHE SOLVES MYSTERIES
WHO: Marcia Gillings, 58, private investigator and owner of Baker Street Investigations in Stuart, Fla.

BACKGROUND: Joined the British police in 1967 and became a sergeant before coming to the United States.

WHAT SHE DOES: Gillings specializes in finding missing persons. To do that, she goes on surveillance missions, talks to informants, and researches people's backgrounds. For example, in an abduction case whose perpetrator made it onto the FBI's most-wanted list, Gillings located a 10-year-old girl. Her search even took her into a Dumpster, looking for clues among the trash. She finally found one: an address that led her to the child.

HOW PEOPLE REACT TO HER JOB: "Most people react with, 'Oh, how exciting!'"

COOL FACTOR: "Being able to help people who have no idea how to solve their problems."

REALITY CHECK: "It is not like the TV or movies at all. There are aspects of the profession that can be quite boring, especially sitting for hours in a hot vehicle."

WHO SHOULD DO IT: "Being an investigator requires "a person with an inquiring mind and someone who enjoys "a challenge. Private investigators are good at relating to people and have a knack [for] helping people with their problems. I am good at what I do because I genuinely enjoy helping individuals and working at the challenges that the job provides."

ADVICE FOR BEGINNERS: "The investigative business now relies on computer data for most of the searches, and therefore being computer savvy is a must."

CAUTION: "If a person wants to have set hours and any kind of personal life, this is certainly not for them."

SPACE IS THE PLACE FOR THIS ASTRONAUT
WHO: Ed Lu, 42, NASA astronaut at the Johnson Space Center in Houston

SCHOOL DAYS: B.S. in electrical engineering from 'Cornell University; Ph.D. in applied physics from Stanford University

WHAT HE DOES: Lu's work ranges from training in a simulator to working in mission control and, of course, flying into space.

HOW PEOPLE REACT TO HIS JOB: "People are usually very interested. Sometimes people don't believe [me]. Usually people are very full of questions."

COOL FACTOR: "You do get to fly in space, and that's pretty cool. You also get to travel and work with great people all around the world. … You do have to work hard, [but] I love what I do. So, to me, coming to work every day is having more fun, be it flying a jet or working in the simulator or even studying. … Life is good."

MOST CHALLENGING PART: "It's probably juggling the, busy schedule. You travel a lot, and you often work late hours, strange hours. For instance, if you happen to be in mission control, you may be working through the middle of the night. And I'm often not at home, which is tough on my family."

ADVICE FOR PROSPECTIVE ASTRONAUTS: "Find an area that you really, really enjoy studying, that you would love to become the best at--be that engineering, some area of science [or] math, or even flying aircraft--and go out and learn everything you can about it. And take the time to really get good at it. That's going to take years; it's not something you can do overnight."

CAUTION: "You need to be pretty patient. You need to be the kind of person [who] can buckle down and spend the years that it can take to be really good at something. It takes commitment."

HER LIFE'S IN THE FAST LANE
WHO: Erin Crocker, 24, professional NASCAR driver

SCHOOL DAYS: B.S. in industrial and management engineering from Rensselaer Polytechnic Institute in Troy, N.Y.

WHAT SHE DOES: Crocker travels to compete in NASCAR races, conducts media interviews, cohosts racing-related TV shows, and makes appearances at special events. She trains on and off the racetrack. In her line of work, physical fitness is as important as practice behind the wheel.

HOW PEOPLE REACT TO HER JOB: "I'll be riding on an airplane and the person next to me will start small talk. Usually, they're really interested. They end up asking a million questions because [my job is] so different."

COOL FACTOR: "The fact that I get to drive cars really fast--and that's my job! I get to travel and meet a lot of new people. I'm never in the same place for longer than a few days. It's just really neat."

HOW SHE GOT STARTED: "I did whatever I could to meet people, get my name out there. I'd go to racetracks and introduce myself to people who I thought would be important. It's a long process. You don't just end up on a team."

WHY SHE SUCCEEDS: "Dedication. I keep myself in very good shape. Some of it has to be natural: your reflexes and your ability to concentrate. I'm pretty good at focusing on what I'm doing and getting the most out of a car. And my ability to learn--I listen to any advice, and I will change right away and try to make it better."

ADVICE FOR BEGINNERS: "Get in any type of race car as soon as possible because the more experience [you have] in any type of car, the better off you'll be in the long run. If you want it, just work for it. Anything is possible."

CAUTION: "You have to believe in yourself. If you don't believe in yourself, you're not going to be successful, no matter how much talent you have."

PROFESSIONAL MOVIEGOER
WHO:
Chris Hewitt, 43, nationally syndicated film critic for the Pioneer Press newspaper, based in St. Paul, Minn.

SCHOOL DAYS: B.A. in history from Illinois Wesleyan University

WHAT HE DOES: In any-given week, Hewitt sees seven movies, interviews actors and directors over the phone, and writes several film reviews and film-related feature stories.

HOW PEOPLE REACT TO HIS JOB: "'You get paid to see movies?' Generally, people think it's a great job; they're right. It's work, but it's good work."

COOL FACTOR: "I love movies. I always went to a lot of them but suspected that I was still missing some good ones. Now I know I'm not missing anything."

WHY HE'S GOOD AT IT: "I really think it comes back to the fact that I love movies. I read critics who I can tell don't, and that doesn't work. Who would sit through seven movies a week if he or she didn't like them?"

ADVICE FOR BEGINNERS: "The main thing is to read a lot and write a lot. You need to be a generalist, so it makes sense to study a lot of different things and be curious about a lot of different things."

CAUTION: "It's a hard job to shoot for because there aren't that many full-time movie critics. Anyone who doesn't respond well to deadlines should probably forget it.",

You Said It!
HERE ARE THE JOBS YOU THINK ARE SUPERCOOL.
"Medical researcher, just because [you] help other people. It would be cool to find cures or different ways of treating diseases and things of his nature."

--JAMIE H., 18

"Being a horse trainer would be a cool because you would get to work with animals and people."

--KATIE E., 17

"Being a lawyer, because you can use basic logic and intelligence."

--LIZ N., 18

"Picking locations for movies would be awesome because then you get to travel to all different places and it would be a business expense."

--LAURA M., 20

"Professional fisherman, because I would be getting paid for something I like to do."

--MIKE W., 16

"Professional musician in a band. It would be cool because you could make music and drive around in a van or a bus with your best friend, having a good time and not worrying about too [many] responsibilities. You'd do what you love to do almost every night."

--JESSE F., 16

By: Faiad, Andrea, Career World, 2006

Drawing Conclusions

Reportedly Career World, Computer-Aided Designers Turn Ideas Into Reality

Wanted: Hotels that can withstand tsunamis. Aerodynamic cars that push gas mileage to new limits. High-rise buildings that have safe escape routes for people on the top floors. Armored vehicles that don't turn into fiery furnaces when hit by roadside bombs. Scientists and engineers tackle projects like those every day.

But they don't do it alone. Computer-aided design (CAD) specialists work alongside them, drafting hotels with enough "give" to twist and turn yet remain standing in extreme wind and water; cars that sport more horsepower for less gas; stairwell materials that withstand fire long enough for the guy on the 100th floor to get out; and vehicles that can take a bomb blast yet keep on going.

"After the World Trade Center was hit [in a terrorist attack on Sept. 11, 2001], the question for us was, 'How much time can we give these people to get out?"' says Mark Schwendau, technology instructor at Kishwaukee College in Malta, Ill. Research teams work constantly to -find answers to such life-and-death situations. "We will come up with bomb-sniffer devices and cell phone blockers for the subways," Schwendau says. "For every problem, there's a solution." CAD specialists are along for every inch of the ride.

CAD specialists have a hand in designing everything from cereal boxes to space shuttles by using computer programs that let them stretch their creativity in computer animation, furniture and technology design, weapons development, and even medical research. Before CAD, designers worked at drafting boards with pens, pencils, and paper. They made detailed original drawings for engineers, architects, and others. Now computers allow designers to produce plans for an underground subway system or the world's tallest building in three dimensions.

CAD is one cool tool. And because CAD specialists can work with almost anything, the job market's jammed with opportunities to combine even the wildest interest with a career. Interested in flying? Both aircraft manufacturer's and NASA use CAD to design prototypes. Automobiles? CAD enables automobile manufacturers to not only come up with designs for new cars but also run virtual crash tests. Furnishings? Using trendy or 'simply functional designs, CAD specialists change the way people decorate their homes and offices.

"We can do things now that were once simply fantasy," Schwendau says. In the days before' CAD, he says; airplane 'design, for example, could take 10 to 15 years from the drawing table to an aircraft in the sky. "Now we can turn it around in less than a year," Schwendau says.

DOWN AND DIRTY WITH CAD
Joe Nagengast and his stable of CAD specialists at Nagengast Brothers L.P. work out of offices in Colorado. They design oil fields, mines, and roads. Nagengast figures out ways to cut into the earth while doing as little damage as possible. Nagengast's work has taken him to Africa, South America, Europe, and Australia, as well as all over the United States.

One of the things Nagengast Brothers designs are open-pit mines. "We design the pit layout and how to follow the ore. You don't just go out and dig. You only go after the ore where it is," he says.

Nagengast's workers also work with the environment. They lay out hazardous waste cleanups and help communities make former chemical dumping grounds safe again. For Nagengast, CAD and geology form a natural mix.

"When you're designing mines, you have to get it down to a gnat's eye," Nagengast says. "And CAD lets you do just that."

WHAT IT TAKES
CAD specialists get in on the ground floor of many industries, from developing new types of boats to creating special effects in movies and television.

"CAD is huge in the entertainment field," Jeffrey Rowe, president of the CAD Society, says. "Every [film] from Star Wars to Harry Potter has used it." In fact, it's hard to find any business, industry, or research that doesn't involve CAD. But because it's used so much doesn't mean it's an easy job anyone can do.

Rowe says a person has to like math and be good at it to succeed in this field. That's not all. It helps to have an interest in science, art, and of course, technology. CAD specialists also need to be patient And committed to their jobs because they need to work on projects for as long as it takes to get them right. Someone who can tackle big projects in school 'and make them sing would probably like CAD. And, Nagengast suggests, "a sense of humor doesn't hurt."

At Kishwaukee, students can go for either a one-year drafting certificate or a two-year design degree. Schwenidau says there are scads of opportunities for CAD specialists. One company near the Kishwaukee campus pays 90 percent of education costs for students who sign on with the company when they graduate.

Some students test-drive other careers by becoming CAD specialists and working in the industries that interest them. They help construct bridges and buildings and then use their experience to decide whether careers in engineering or architecture are right for them. They sample career fields without first having to hunker down through four years of college.

SHOW ME THE MONEY
CAD specialists can make a little or a lot, depending on the job and its location. Schwendau says interns at one company near his Illinois campus make $12 an hour, and Nagengast estimates that new CAD specialists in industries like telecommunications start at around $8.50 to $10 an hour. Consultants can pull down an hourly wage of $16 to $22. The money can go up or down' depending on many factors, such as the type of job and the skills needed.

The profession has a solid future, everyone seems to agree. Schwendau says fewer students strike out for a' career in CAD, even though jobs are plentiful and prospects for new ones look great.

That combination--more jobs than workers--can translate into bigger bucks and better opportunities down the road.

For more information on jobs in CAD, check out the CAD Society's

Working with the Gorillas

When I grow up, one of the many jobs I’d like is to work as a zoologist. A zoologist is a scientist who works with animals in nature. I would like to go to Kenya to study mountain gorillas and other primates. An article in the New York Times first sparked my interest. While paging through the Science Times, a headline caught my attention:

“Scientists find that Monkeys are Using Words”
Interested, I read on. The article explained that scientists had recorded sounds that monkeys made to signal which kinds of predators were near. A grunt meant that a predatory bird was flying above; another guttural noise meant that a panther was lurking nearby. In addition, zoologists noticed that the primates were combining the noises. When the researchers played the combined noise back to the monkeys on a tape recorder, the monkeys vanished into the underbrush. Clearly, this sound was a warning to them.

In researching gorillas, I found some amazing facts which astonished me. For example, a gorilla’s upper body is so strong that if you took the strongest man on earth, and measured how strong his legs were, then measured an averaged gorilla’s arm strength, the gorilla’s arms would be stronger than the strongest man’s legs!

Unfortunately, there are currently only 35,000 Western Lowland Gorillas in the world. There are barely 3,000-5,000 Eastern Lowland Gorillas, and merely 400-600 Mountain Gorillas. I am stunned by these minute numbers, and I would like to work in this field, because I would like to help keep the gorillas from becoming extinct.

Furthermore, I think there are many things yet to be discovered, so it would always be exciting. By learning more about apes, we may even learn more about pre-historic and modern humans.

Truly, I find that working in nature as my idols, Jane Goodall and Diane Fossey did, would be an utmost pleasure!

By: Akay, Leyla, Skipping Stones, Sep/Oct2006

Weather records question the truth behind the Amityville Horror

Thirty years ago, rumors of ghosts and demons swirled out of a small town on Long Island, New York. In 1975, George and Kathy Lutz and their three children moved into a three-story home in the town of Amityville. The house had a bleak history that included the death of six residents the previous year at the hands of convicted murderer Ronald DeFeo. The spectre of hauntings quickly arose as the Lutz family proclaimed the occurrence of accidents, misfortunes, nighttime awakenings, strange noises, and ghostly apparitions. After spending 28 days in the house, the family fled at dawn, leaving most of their belongings behind.

The house soon attracted the attention of others, including psychics and a local news team, and it was featured in an article in Good Housekeeping magazine, titled “Our Dream House Was Haunted,” in April of 1977. But the house became a national obsession in September of that year when The Amityville Horror: A True Story hit the national bookstores. Penned by writer Jay Anson, the book sold 10 million copies. In July 1979, a big-screen film version of the story, starring James Brolin and Margot Kidder, became a box-office smash, earning over $80 million. To this day, the image of a Dutch colonial home still brings to mind the menacing, anthropomorphized house that has become symbolic of the entire Amityville Horror genre.

Controversy Grows
The house’s “true” haunting credentials have long been a source of controversy, and its most vocal skeptics cite it as a masterful hoax that brought fame and fortune. Subsequent occupants of the house have been unanimous in their assertion that it is not haunted and have cited their frustration with tourists who still drive by the house decades later. Furthermore, William Weber, the attorney for the murderer DeFeo, told the Associated Press in 1979 that he, along with Kathy and George Lutz, had invented parts of the best-selling story “over many bottles of wine.”

However, George Lutz continually countered these statements over the years. Author Jay Anson maintained that the story was true, to the extent that he could verify them through his 35 hours of taped interviews with George Lutz, documenting the haunting in exacting detail.

So what is the truth? Extensive debunking of the story has appeared in numerous books and website pages. Nearly all focus on police and hospital records, interviews, and the condition of the house. However, although storms, snow, and wind played pivotal roles in the haunting, official weather records have received only a cursory glance.

Until now. By taking a close look at some passages from Anson’s book, we can see how they stack up to the actual weather records.

December 25, 1975
3:15 a.m: “In the winter moonlight flooding the bedroom, George saw Kathy quite clearly. She was sleeping on her stomach. He reached out his hand to touch her head. At that instant Kathy woke up. As she looked wildly about, George could see the fright in her eyes.”

The Reality: Overcast layers of altostratus were observed at JFK International Airport at this time, so it is improbable that winter moonlight would have been flooding the bedroom.

December 25, 1975
“At six o’clock that evening, Kathy was preparing supper for her family when she heard the sounds of something tiny and delicate striking against the glass of her kitchen window. It was dark outside, but she could see it was snowing.”

The Reality: Snow did fall that afternoon, a large-scale event associated with a surface low moving up the coast. At first glance the snow occurrence appears to support the story, but the snow started at 2 p.m. and reached its peak at 5 p.m. It is improbable that Kathy, who had been shopping during the day, would have noticed the snow so belatedly.

December 26, 1975
“The roads were reported to be icy from [yesterday’s] light snow, however, and it was a Friday night. Traffic would be heavy and slow.”

The Reality: The temperature had risen to 38°F overnight and had settled in the mid-50s all day.

December 27, 1975
“The weather was bright and clear, the temperatures hovering in the low teens.”

The Reality: Weather records showed overcast stratocumulus and 39°F, falling slowly from the pre-dawn high of 46°F. At no time during the holiday period was the afternoon temperature below freezing.

January 1, 1976
“The morning snowfall had made traveling on the roads hazardous. As the day wore on, it got colder, and cars began to get caught in drifts and skid on icy spots all over Long Island.”

The Reality: Some light, wet snow had fallen in the pre-dawn hours while the mercury was 33°F, but skies rapidly cleared and the temperature climbed all day, reaching 40°F under the clear afternoon sky.

January 10, 1916
“He heard a loud clap of thunder. Looking out the windows, he saw the first raindrops strike the panes. Then somewhere in the distance, a flash of lightning hit the darkness and again, a few moments later, came another boom of thunder. George could make out the silhouettes of trees swaying in the rising gusts … The rain was coming down much harder now, beating heavily against the windows and outside walls.”

This recounts a thunderstorm that hit at 8 p.m., accompanied by lightning and heavy rain, with a force strong enough to tear down a telephone pole. An accident occurs in the house and it takes George Lutz fifteen minutes to drive his son to the hospital due to hurricane force winds raging through Long Island’s South Shore. According to the book, the rain continues overnight and all of the house’s windows opened, mysteriously. Dawn breaks, revealing severe water damage in the house with rain continuing to whip through the open windows.

The Reality: The weather record for JFK International Airport at 8 p.m. showed clear skies and a temperature of 24°F. As the night continued, an overcast layer moved in and light snow fell from 5:30 a.m. until 7:00 a.m. as a warm front approached from the southwest. The air mass was far too cold and stable to support thunderstorm activity.

January 13-14, 1976
“Despite all the noise, George now heard doors all throughout the house beginning to slam back and forth … A terrible, blinding flash of lightning lit up the bedroom. George heard the thunderbolt strike something close outside. Then there was a smashing blow that shook the entire house. The storm was back, with torrents of rain and wind. George lay there panting, his heart thumping loudly in his chest. He was waiting, knowing something else was about to happen. Then George let out a horrible, silent scream. Somebody was on the bed with him!”

This was the night that the haunting allegedly reached its climax. It began with a thunderstorm which struck at 1 p.m., continuing intermittently for 16 hours with only a short respite around 1 a.m.

The Reality: Meteorologically, 16 hours of thunderstorm activity bears a very strong correlation with flash flood events. Such events may be caused by “training” of storm cells, which requires upper-level flow to be parallel to a boundary. It may also be caused by a stationary source of lift, such as high terrain or a stationary front. It also may result from exceptionally weak upperlevel flow which allows for slow progression of a large-scale weather system. In all cases, an inflow of low-level moisture is necessary to support continued thunderstorm development.

None of these factors was present during the week in question. Weather patterns for January 13, 1976, showed strong winds aloft, a fast-progressing surface system which moved 900 miles in one day from the Midwest region to Maine, and exceptionally fast-moving boundaries. Weather records from JFK International Airport indicated light stratiform rain during the afternoon hours and briefly around midnight. Observed rainfall was only 0.21 inch.

The Exception
In spite of the errors and omissions, one accurate correlation was found. On January 1, 1976, at 1 a.m., Anson’s novel recounts: “They were awakened by a howling wind roaring through their bedroom. The blankets on the bed had been virtually torn from their bodies, leaving George and Kathy shivering. All the windows in the room were wide open, and the bedroom door, caught by the drafts, was swinging back and forth.” After George closed the window, he could hear the wind “gusting violently outside.”

Indeed, a wind event did occur that night as a surface low moved up the Atlantic coast, causing winds at JFK International Airport to gust to over 30 mph as winds backed from northeast to northwest. This wind reached its peak at 2 a.m., and the weather records support the story.

Fact or Fiction?
In summary, analysis of weather maps and observations show unresolved discrepancies with Anson’s novel. One possibility is that due to inaccurate reconstruction, the calendar dates are in error. However, none of the events could be accurately supported on adjacent days, and in many cases the character of the weather could not be explained by any observed meteorological pattern at all. Furthermore, the National Climatic Data Center publication Storm Data shows a complete absence of damaging thunderstorms in coastal New York during January 1976. No thunderstorm was reported at JFK International Airport during key events, and in many cases no weather phenomena were observed at all.

Although the weather records may debunk Anson’s novel, it is fallacious logic to assume that the evidence invalidates the haunting. It is possible that Anson craft ed the weather events to reinforce the story. The novel’s weather moved through three distinct meteorological phases, from serenity to bitter chill to dark tempest, serving as its own metaphor for the haunting. Indeed, weather has had a close association with the supernatural since Egyptian and Roman times, and countless writers have expertly used meteorology for dramatic effect, from Shakespeare to Shelley and from H.P. Lovecraft to Stephen King.

So it remains up to the reader to examine other evidence to decide what really happened in Amityville. Author Jay Anson passed away in 1980 and Kathy Lutz succumbed to emphysema in 2004. The central figure of the hauntings, George Lutz, died of heart failure on May 8, 2006, shortly before this article was written. The truth about the hauntings is now obscured forever, passing into the pages of American lore. Regardless of whether the Amityville Horror saga is fact or hoax, it remains one of America’s most popular and gripping modern ghost stories.

NCDC to the Rescue
A useful source for climatic information, the National Climatic Data Center (NCDC) keeps detailed weather records going well back into the 19th century. As part of this study, I used the Form 10 Surface Weather Observation from NCDC for JFK International Airport, which is located 18 miles west of the Amityville house and is representative for most types of weather events. These records show hourly observations taken by federally certified weather observers. In addition, the NOAA Daily Weather Map series was consulted to analyze the weather patterns that moved through New York in correlation with the detailed dates set forth in The Amityville Horror: A True Story.


http://www.st0ries.com/

Top Destinations for College Freshmen

When students leave their home states to attend college, where are they most likely to be headed?

Pennsylvania: 26,341

New York: 22,267

Massachusetts: 19,686

California: 13,957

Florida: 13,892

SOURCE: USA FOR EDUCATION STATISTICS

Seeing the Future

Joel Holland decided to research careers that sounded appealing, but he wasn't satisfied with the information he found.

"When I went to research the careers I thought I was interested in, I found boring 1984 descriptions that were behind the times," Holland, now 20, told Career World. So Holland created Streaming Futures, a Web site that aims to provide up-to-date, and most important, real information about diverse jobs.

As the site's host, Holland chats with industry leaders twice a month to hear about their career paths and learn the secrets of their success. Videos of the interviews are available online at StreamingFutures.com. Holland has talked with California Gov. Arnold Schwarzenegger, Verizon CEO Ivan Seidenberg, Giuliana from E! News Live, and many more. Holland says that Streaming Futures "blurs the line between education and entertainment."

The site has the celebrity factor that appeals to today's "MTV society," Holland says. The interviewees have reached celebrity status in their respective fields. You may not recognize the name Atoosa Rubenstein right away, but after watching her interview with Holland, you'll know that she started CosmoGirl! magazine when she was only 26!

Holland himself is an established success in the business world. At age 13, he designed Web sites for schools and companies, and it didn't take long before he started investing in the stock market. In 2002, Holland was named Business Student of the Year by the McLean, Va., Chamber of Commerce and was asked by Entrepreneur magazine to be a monthly columnist.

Holland now attends Babson College in Massachusetts. But he hasn't stopped the campaign to keep America's youth informed about their futures.

"I have received comments from people about how the program has helped," he says. "They say it's beneficial to their [career] choice and many say it has helped them realize what they don't want to do."

Career World, 2006

The Signs Still Point to Ross

Mysteries of History/ Who Was First? Stars & Stripes

In June 1776, George Washington and a secret committee, assembled to create the first American flag, visited the Philadelphia upholstery business of Betsy Ross. The recently widowed seamstress was eager for any kind of work, but Ross wasn’t thrilled with one detail of the original design. The flag featured a six-pointed star, a symbol she objected to because it was the commonly used star in English heraldry. America, she said, should use new imagery: a five-pointed star. To silence the men’s protests that these new stars would be unfamiliar and difficult for seamstresses to make, she folded a piece of paper, made a single scissor snip, and revealed a perfect five-pointed star.

Makes for a classic story of American ingenuity, right? Maybe that’s why some historians have been on a mission to debunk it. What they’ve found is that there is no cong