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Two monkeys see a more colorful world
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Atom Hauler
A Spider's Silky Strength
Supergoo to the rescue
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A Light Delay
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Seen on the Science Fair Scene
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Did Dinosaurs Do Handstands?
Dino-bite!
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Results of GSAT are in schools this week
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Life trapped under a glacier
Rodent Rubbish as an Ice-Age Thermometer
Salty, Old and, Perhaps, a Sign of Early Life
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Swimming with Sharks and Stingrays
Out in the Cold
Eating Up Foul Sewage Smells
Finding the Past
Little People Cause Big Surprise
Sahara Cemetery
Early Maya Writing
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Goldfish
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Parrotfish
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The Essence of Celery
The mercury in that tuna
Turning to Sweets, Fats to Calm the Brain
GSAT English Rules
Order of Adjectives
Adjectives and Adverbs
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Deep-space dancers
Math Naturals
Losing with Heads or Tails
Human Body
Disease Detectives
Football Scrapes and Nasty Infections
Kids now getting 'adult' disease
Invertebrates
Walking Sticks
Ticks
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Mammals
Oxen
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Sun Bear
Parents
The Surprising Meaning and Benefits of Nursery Rhymes
Expert report highlights the importance to parents of reading to children!
How children learn
Physics
The Mirror Universe of Antimatter
Electric Backpack
Spin, Splat, and Scramble
Plants
White fuzzy mold not as friendly as it looks
Fast-flying fungal spores
Springing forward
Reptiles
Geckos
Lizards
Black Mamba
Space and Astronomy
Cool as a Jupiter
A Darker, Warmer Red Planet
An Icy Blob of Fluff
Technology and Engineering
Algae Motors
A Clean Getaway
Squeezing Oil from Old Wells
The Parts of Speech
Problems with Prepositions
What is a Preposition?
What is a Verb?
Transportation
Morphing a Wing to Save Fuel
Seen on the Science Fair Scene
Charged cars that would charge
Weather
Watering the Air
Warmest Year on Record
Polar Ice Feels the Heat
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Flying the Hyper Skies

A little airplane has given new meaning to the term "going hyper." The Hyper-X recently broke the record for air-breathing jet planes when it traveled at a hypersonic speed of seven times the speed of sound. That's about 5,000 miles per hour. At this speed, you'd get around the world—flying along the equator—in less than 5 hours. The Hyper-X is an unmanned, experimental aircraft just 12 feet long. It achieves hypersonic speed using a special sort of engine known as a scramjet. It may sound like something from a comic book, but engineers have been experimenting with scramjets since the 1960s. For an engine to burn fuel and produce energy, it needs oxygen. A jet engine, like those on passenger airplanes, gets oxygen from the air. A rocket engine typically goes faster but has to carry its own supply of oxygen. A scramjet engine goes as fast as a rocket, but it doesn't have to carry its own oxygen supply. A scramjet's special design allows it to extract oxygen from the air that flows through the engine. And it does so without letting the fast-moving air put out the combustion flames. However, a scramjet engine works properly only at speeds greater than five times the speed of sound. A booster rocket carried the Hyper-X to an altitude of about 100,000 feet for its test flight. The aircraft's record-beating flight lasted just 11 seconds. In the future, engineers predict, airplanes equipped with scramjet engines could transport cargo quickly and cheaply to the brink of space. Hypersonic airliners could carry passengers anywhere in the world in just a few hours. Out of the three experimental Hyper-X aircraft built for NASA, only one is now left. The agency has plans for another, 11-second hypersonic flight, this time at 10 times the speed of sound. Hang on tight!—S. McDonagh

Flying the Hyper Skies
Flying the Hyper Skies








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