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Fast-flying fungal spores
Microbes at the Gas Pump
Springing forward
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Newts
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Fishing for Giant Squid
Stunts for High-Diving Ants
Killer Flatworms Hunt with Poison
Behavior
Math is a real brain bender
Between a rock and a wet place
A Light Delay
Birds
Parrots
Roadrunners
Geese
Chemistry and Materials
Moon Crash, Splash
Supersonic Splash
Heaviest named element is official
Computers
Galaxies on the go
Lighting goes digital
Two monkeys see a more colorful world
Dinosaurs and Fossils
Hall of Dinos
Watery Fate for Nature's Gliders
Fingerprinting Fossils
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Snowflakes and Avalanches
Less Mixing Can Affect Lake's Ecosystem
The Pacific Ocean's Bald Spot
Environment
Easy Ways to Conserve Water
Eating Up Foul Sewage Smells
Sounds and Silence
Finding the Past
A Long Trek to Asia
Sahara Cemetery
Prehistoric Trips to the Dentist
Fish
Tilapia
Pygmy Sharks
A Jellyfish's Blurry View
Food and Nutrition
Recipe for Health
Food for Life
Packing Fat
GSAT English Rules
Adjectives and Adverbs
Problems with Prepositions
Pronouns
GSAT Exam Preparation Jamaica
Ministry of Education Announces 82 GSAT Scholarships for 2010
Preparing for the GSAT Exam
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
42,000 students will sit for the GSAT Exam in two weeks
GSAT Scholarship
GSAT Mathematics
Detecting True Art
10 Common Mistakes When Preparing for the GSAT Math Test
Math and our number sense: PassGSAT.com
Human Body
Kids now getting 'adult' disease
Sun Screen
A Sour Taste in Your Mouth
Invertebrates
Hermit Crabs
Bees
Crustaceans
Mammals
Sheep
Aquatic Animals
Foxes
Parents
What Not to Say to Emerging Readers
Children and Media
The Surprising Meaning and Benefits of Nursery Rhymes
Physics
The Pressure of Scuba Diving
IceCube Science
Strange Universe: The Stuff of Darkness
Plants
Making the most of a meal
Cactus Goo for Clean Water
Fast-flying fungal spores
Reptiles
Snakes
Box Turtles
Iguanas
Space and Astronomy
Galaxies Divide Sharply Along Color Lines
Icy Red Planet
Ready, Set, Supernova
Technology and Engineering
Dancing with Robots
Sugar Power for Cell Phones
Smart Windows
The Parts of Speech
What is a Verb?
Adjectives and Adverbs
Countable and Uncountable Nouns
Transportation
Morphing a Wing to Save Fuel
How to Fly Like a Bat
Are Propellers Fin-ished?
Weather
Either Martians or Mars has gas
The Best Defense Is a Good Snow Fence
Polar Ice Feels the Heat
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Machine Copy

It would be a perfect theme for a horror movie: People build robots that can make copies of themselves. Robots reproduce like crazy. Robots take over the world. Ridiculous? In fact, only part of the story is fiction. Robots haven't yet taken over the world, but scientists from Cornell University have created simple machines that can make more of their own kind. The process is called self-replication. Far from being nightmarish, the researchers say, self-replicating robots could revolutionize space exploration. And they'd be perfect for clearing minefields and doing other risky tasks. Best of all, they'd be able to repair themselves. The new robots are made of stacks of blocks called "molecubes." Each cube is about the size of an adult's fist. Inside, there's a motor, electromagnets, and a tiny computer processor. The cubes are divided diagonally into plastic halves that can swivel back and forth. As a robot copies itself, computer programs tell the cube halves how to rotate. Electromagnets, meanwhile, let go of some cubes and pick up others that have been placed nearby. During the process, the stack of cubes twists and bends into various shapes, such as L's or upside-down U's. In the end, there are two identical objects, where once there was just one. This may not sound very impressive—yet. But it's a step on the path toward complex machines that can make copies of themselves.—E. Sohn

Machine Copy
Machine Copy








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