Agriculture
Seeds of the Future
Growing Healthier Tomato Plants
Watering the Air
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Toads
Salamanders
Poison Dart Frogs
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Chicken Talk
Staying Away from Sick Lobsters
Copybees
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Swine flu goes global
Primate Memory Showdown
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Chemistry and Materials
Screaming for Ice Cream
The chemistry of sleeplessness
Putting the Squeeze on Toothpaste
Computers
Hitting the redo button on evolution
Programming with Alice
Toxic Dirt + Avian Flu = Science Fair Success
Dinosaurs and Fossils
Ancient Critter Caught Shedding Its Skin
Winged Insects May Go Way Back
A Dino King's Ancestor
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Earth
Plastic-munching microbes
Drilling Deep for Fuel
Hot Summers, Wild Fires
Environment
Fungus Hunt
A Newspaper's Hidden Cost
Alien Invasions
Finding the Past
A Long Trek to Asia
An Ancient Childhood
Oldest Writing in the New World
Fish
Barracudas
Codfish
Carp
Food and Nutrition
Building a Food Pyramid
How Super Are Superfruits?
Moving Good Fats from Fish to Mice
GSAT English Rules
Who vs. That vs. Which
Whoever vs. Whomever
Who vs. Whom
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Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
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GSAT Mathematics
Losing with Heads or Tails
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Setting a Prime Number Record
Human Body
Gut Germs to the Rescue
Electricity's Spark of Life
A Fix for Injured Knees
Invertebrates
Beetles
Octopuses
Scorpions
Mammals
Vampire Bats
Kangaroos
Canines
Parents
How children learn
Children and Media
Raise a Lifelong Reader by Reading Aloud
Physics
Road Bumps
Echoes of a Stretched Egg
Einstein's Skateboard
Plants
Assembling the Tree of Life
Plants Travel Wind Highways
Fungus Hunt
Reptiles
Crocodiles
Komodo Dragons
Crocodilians
Space and Astronomy
Slip-sliding away
Melting Snow on Mars
Dark Galaxy
Technology and Engineering
Young Scientists Take Flight
Searching for Alien Life
A Light Delay
The Parts of Speech
What is a Preposition?
Countable and Uncountable Nouns
What is a Verb?
Transportation
Flying the Hyper Skies
Middle school science adventures
Are Propellers Fin-ished?
Weather
Earth's Poles in Peril
Antarctica warms, which threatens penguins
Weekend Weather Really Is Different
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Cousin Earth

As their search continues, astronomers are finding more and more planets orbiting nearby stars. This time, they've detected a solid planet that's just 15 light-years from Earth. Many details about the planet remain unknown because the astronomers didn't see it directly. Instead, they were able to detect how the planet's gravity makes its star wobble a little bit. Out of 156 planets discovered so far in other solar systems, the new extrasolar planet is the smallest one yet found. It's about 7.5 times heavier than Earth. Along with two, much bigger planets, the new world orbits a star called Gliese 876. The planet takes just 1.9 days to complete an orbit around Gliese 876. So, its year is much, much shorter than ours. It's so close to its star that its surface is hot enough to roast a chicken. Most extrasolar planets that have been found so far are big balls of gas, like Jupiter and Saturn. Because the planet's mass is low, it probably couldn't hold onto much gas. So, scientists suspect that it's rocky. "This could be the first [known] rocky planet around any normal star other than the sun," says team member Jack Lissauer of NASA's Ames Research Center in Mountain View, Calif. Scientists are still trying to figure out how rocky planets might form so close to their stars. Whatever the answer, the new discovery gives researchers confidence that they will one day find even closer cousins to Earth somewhere in the universe. And, on a planet resembling Earth, they might also discover traces of life as we know it.E. Sohn

Cousin Earth
Cousin Earth








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