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A Light Delay
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Silk’s superpowers
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Play for Science
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Look into My Eyes
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Dino Bite Leaves a Tooth
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E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
Earth
On the Trail of America's Next Top Scientists
Deep Drilling at Sea
The Pacific Ocean's Bald Spot
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Nanosponges Soak Up Pollutants
An Ocean View's Downside
Forests as a Tsunami Shield
Finding the Past
Meet your mysterious relative
Writing on eggshells
A Volcano's Deadly Ash
Fish
Catfish
Mako Sharks
Carp
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Food for Life
Chocolate Rules
Recipe for Health
GSAT English Rules
Finding Subjects and Verbs
Problems with Prepositions
Who vs. Whom
GSAT Exam Preparation Jamaica
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
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Ministry of Education Announces 82 GSAT Scholarships for 2010
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GSAT stars reap scholarship glory
GSAT Mathematics
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Math is a real brain bender
10 Common Mistakes When Preparing for the GSAT Math Test
Human Body
Electricity's Spark of Life
Dreaming makes perfect
Walking to Exercise the Brain
Invertebrates
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Children and Media
Expert report highlights the importance to parents of reading to children!
The Surprising Meaning and Benefits of Nursery Rhymes
Physics
Dreams of Floating in Space
The Mirror Universe of Antimatter
Project Music
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Plants Travel Wind Highways
Making the most of a meal
Fungus Hunt
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Garter Snakes
Space and Astronomy
Asteroid Moons
Super Star Cluster in the Neighborhood
Zooming In on the Wild Sun
Technology and Engineering
Searching for Alien Life
Algae Motors
Sugar Power for Cell Phones
The Parts of Speech
What is a Noun
Adjectives and Adverbs
What is a Preposition?
Transportation
Where rivers run uphill
Robots on a Rocky Road
Tinkering With the Basic Bike
Weather
Catching Some Rays
Watering the Air
Recipe for a Hurricane
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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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