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Vitamin D-licious Mushrooms
Springing forward
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Toads
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Salamanders
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Blotchy Face, Big-Time Wasp
Cannibal Crickets
How to Fly Like a Bat
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The Disappearing Newspaper
A brain-boosting video game
Listening to Birdsong
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Peafowl
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Condors
Chemistry and Materials
Meteorites may have sparked life on Earth
The hungry blob at the edge of the universe
Sticky Silky Feet
Computers
Troubles with Hubble
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The solar system's biggest junkyard
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A Really Big (but Extinct) Rodent
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Dinosaurs Grow Up
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
Earth
A Great Quake Coming?
Easy Ways to Conserve Water
Hot Summers, Wild Fires
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A Change in Climate
Pumping Up Poison Ivy
Fungus Hunt
Finding the Past
Writing on eggshells
Decoding a Beverage Jar
Preserving Ancient Warrior Paint
Fish
Pygmy Sharks
A Jellyfish's Blurry View
Skates
Food and Nutrition
Turning to Sweets, Fats to Calm the Brain
Sponges' secret weapon
Eat Out, Eat Smart
GSAT English Rules
Capitalization Rules
Who vs. Whom
Whoever vs. Whomever
GSAT Exam Preparation Jamaica
Results of GSAT are in schools this week
The Annual GSAT Scholarships
2014 GSAT Results for Jamaican Kids
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
GSAT Exam Preparation
42,000 students will sit for the GSAT Exam in two weeks
GSAT Mathematics
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Prime Time for Cicadas
Math is a real brain bender
Human Body
The tell-tale bacteria
Prime Time for Broken Bones
Music in the Brain
Invertebrates
Scallops
Nautiluses
Giant Clam
Mammals
Blue Whales
Black Bear
Echidnas
Parents
Raise a Lifelong Reader by Reading Aloud
Expert report highlights the importance to parents of reading to children!
What Not to Say to Emerging Readers
Physics
One ring around them all
Speedy stars
Invisibility Ring
Plants
A Giant Flower's New Family
Stalking Plants by Scent
Fastest Plant on Earth
Reptiles
Lizards
Sea Turtles
Snapping Turtles
Space and Astronomy
Older Stars, New Age for the Universe
An Icy Blob of Fluff
A Dusty Birthplace
Technology and Engineering
Roll-Up Computer Monitors to Go
Slip Sliming Away
Spinach Power for Solar Cells
The Parts of Speech
Countable and Uncountable Nouns
What is a Noun
Adjectives and Adverbs
Transportation
Robots on a Rocky Road
Where rivers run uphill
Troubles with Hubble
Weather
Where rivers run uphill
Antarctica warms, which threatens penguins
Arctic Melt
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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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