Agriculture
New Gene Fights Potato Blight
Watching out for vultures
Springing forward
Amphibians
Frogs and Toads
Salamanders and Newts
Tree Frogs
Animals
A Grim Future for Some Killer Whales
Cannibal Crickets
Feeding School for Meerkats
Behavior
Slumber by the numbers
Dino-bite!
Math is a real brain bender
Birds
Backyard Birds
Crows
Cranes
Chemistry and Materials
Toxic Dirt + Avian Flu = Science Fair Success
Supersonic Splash
Revving Up Green Machines
Computers
Galaxies far, far, far away
The Shape of the Internet
Batteries built by Viruses
Dinosaurs and Fossils
Did Dinosaurs Do Handstands?
Watery Fate for Nature's Gliders
Ancient Critter Caught Shedding Its Skin
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
Life trapped under a glacier
A Great Quake Coming?
Pollution at the ends of the Earth
Environment
The Best Defense Is a Good Snow Fence
Nanosponges Soak Up Pollutants
Hazy with a Chance of Sunshine
Finding the Past
Sahara Cemetery
Watching deep-space fireworks
Ancient Cave Behavior
Fish
Codfish
Mako Sharks
Halibut
Food and Nutrition
Yummy bugs
Eat Out, Eat Smart
Recipe for Health
GSAT English Rules
Who vs. That vs. Which
Subject and Verb Agreement
Capitalization Rules
GSAT Exam Preparation Jamaica
42,000 students will sit for the GSAT Exam in two weeks
Preparing for the GSAT Exam
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
GSAT Exams Jamaica Scholarships
GSAT Scholarship
Access denied - Disabled boy aces GSAT
GSAT stars reap scholarship glory
GSAT Mathematics
How a Venus Flytrap Snaps Shut
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Losing with Heads or Tails
Human Body
Gut Germs to the Rescue
Sleeping Soundly for a Longer Life
Gut Microbes and Weight
Invertebrates
Termites
Invertebrates
Leeches
Mammals
Weasels and Kin
Kangaroos
Lynxes
Parents
Expert report highlights the importance to parents of reading to children!
The Surprising Meaning and Benefits of Nursery Rhymes
Raise a Lifelong Reader by Reading Aloud
Physics
Invisibility Ring
Project Music
Thinner Air, Less Splatter
Plants
Springing forward
Fast-flying fungal spores
Seeds of the Future
Reptiles
Box Turtles
Crocodiles
Alligators
Space and Astronomy
A Smashing Display
Slip-sliding away
A Whole Lot of Nothing
Technology and Engineering
Machine Copy
Supersuits for Superheroes
Slip Sliming Away
The Parts of Speech
Problems with Prepositions
What is a Noun
Pronouns
Transportation
Tinkering With the Basic Bike
Robots on the Road, Again
Middle school science adventures
Weather
Watering the Air
Recipe for a Hurricane
Where rivers run uphill
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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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