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Little Bee Brains That Could
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GSAT Mathematics Quiz, Teaching Math, teaching anxiety
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Ear pain, weight gain
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Nanomagnets Corral Oil
The Taste of Bubbles
A Framework for Growing Bone
Computers
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2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
Earth
Getting the dirt on carbon
Earth from the inside out
Detecting an Eerie Sea Glow
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Improving the Camel
City Trees Beat Country Trees
Alien Invasions
Finding the Past
Early Maya Writing
Stone Age Sole Survivors
Meet your mysterious relative
Fish
Bass
Cleaning Up Fish Farms
Trout
Food and Nutrition
Recipe for Health
Allergies: From Bee Stings to Peanuts
Symbols from the Stone Age
GSAT English Rules
Finding Subjects and Verbs
Problems with Prepositions
Capitalization Rules
GSAT Exam Preparation Jamaica
Mastering The GSAT Exam
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
10 Common Mistakes When Preparing for the GSAT Math Test
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Mathematics
10 Common Mistakes When Preparing for the GSAT Math Test
Math and our number sense: PassGSAT.com
Losing with Heads or Tails
Human Body
Workouts: Does Stretching Help?
Opening a Channel for Tasting Salt
Attacking Asthma
Invertebrates
Mosquitos
Giant Clam
Dragonflies
Mammals
St. Bernards
Bears
Giant Panda
Parents
Choosing a Preschool: What to Consider
How children learn
The Surprising Meaning and Benefits of Nursery Rhymes
Physics
Echoes of a Stretched Egg
Electric Backpack
Road Bumps
Plants
Farms sprout in cities
Getting the dirt on carbon
When Fungi and Algae Marry
Reptiles
Pythons
Snapping Turtles
Rattlesnakes
Space and Astronomy
Zooming In on the Wild Sun
Dark Galaxy
An Earthlike Planet
Technology and Engineering
Model Plane Flies the Atlantic
Space Umbrellas to Shield Earth
A Light Delay
The Parts of Speech
What is a Verb?
Pronouns
What is a Noun
Transportation
Where rivers run uphill
Tinkering With the Basic Bike
Charged cars that would charge
Weather
Arctic Melt
Recipe for a Hurricane
Science loses out when ice caps 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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