Agriculture
Cleaning Up Fish Farms
Silk’s superpowers
Microbes at the Gas Pump
Amphibians
Tree Frogs
Toads
Salamanders and Newts
Animals
Revenge of the Cowbirds
Vent Worms Like It Hot
Pothole Repair, Insect-style
Behavior
Monkeys in the Mirror
Wake Up, Sleepy Gene
Honeybees do the wave
Birds
Peafowl
Nightingales
Geese
Chemistry and Materials
Batteries built by Viruses
Watching out for vultures
The science of disappearing
Computers
Music of the Future
Hitting the redo button on evolution
A Classroom of the Mind
Dinosaurs and Fossils
The Paleontologist and the Three Dinosaurs
A Dino King's Ancestor
Dinosaur Eggs-citement
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
Earth's Lowly Rumble
Surf Watch
Riding to Earth's Core
Environment
Seabirds Deliver Arctic Pollutants
Flu river
City Trees Beat Country Trees
Finding the Past
Settling the Americas
Watching deep-space fireworks
Meet your mysterious relative
Fish
Bass
Flashlight Fishes
Parrotfish
Food and Nutrition
Healing Honey
A Taste for Cheese
Strong Bones for Life
GSAT English Rules
Order of Adjectives
Problems with Prepositions
Capitalization Rules
GSAT Exam Preparation Jamaica
GSAT Practice Papers | GSAT Mathematics | Maths
Ministry of Education Announces 82 GSAT Scholarships for 2010
Preparing for the GSAT Exam
GSAT Exams Jamaica Scholarships
GSAT Scholarship
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
GSAT Mathematics
Prime Time for Cicadas
Setting a Prime Number Record
Losing with Heads or Tails
Human Body
Surviving Olympic Heat
Heavy Sleep
Opening a Channel for Tasting Salt
Invertebrates
Spiders
Tapeworms
Jellyfish
Mammals
Ponies
Pugs
Armadillo
Parents
Choosing a Preschool: What to Consider
What Not to Say to Emerging Readers
Children and Media
Physics
One ring around them all
Extra Strings for New Sounds
Dreams of Floating in Space
Plants
Tracking the Sun Improves Plant Pollen
The algae invasion
A Giant Flower's New Family
Reptiles
Black Mamba
Crocodilians
Cobras
Space and Astronomy
Chaos Among the Planets
A Darker, Warmer Red Planet
Ready, Set, Supernova
Technology and Engineering
Squeezing Oil from Old Wells
Beyond Bar Codes
Switchable Lenses Improve Vision
The Parts of Speech
Adjectives and Adverbs
What is a Preposition?
Pronouns
Transportation
How to Fly Like a Bat
Middle school science adventures
Robots on a Rocky Road
Weather
Catching Some Rays
Recipe for a Hurricane
The Best Defense Is a Good Snow Fence
Add your Article

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








Designed and Powered by HBJamaica.com™