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Electronic Paper Turns a Page
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2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
Earth
Earth's Poles in Peril
Weird, new ant
A Grim Future for Some Killer Whales
Environment
The Best Defense Is a Good Snow Fence
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The Wolf and the Cow
Finding the Past
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A Long Trek to Asia
Prehistoric Trips to the Dentist
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Skates and Rays
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The Color of Health
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Ministry of Education Announces 82 GSAT Scholarships for 2010
Tarrant High overcoming the odds
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42,000 students will sit for the GSAT Exam in two weeks
GSAT Mathematics
Deep-space dancers
Prime Time for Cicadas
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Human Body
Hear, Hear
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Smiles Turn Away Colds
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Krill
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What Not to Say to Emerging Readers
Raise a Lifelong Reader by Reading Aloud
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Physics
The Mirror Universe of Antimatter
The Pressure of Scuba Diving
Electric Backpack
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Nature's Alphabet
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Cactus Goo for Clean Water
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Riding Sunlight
Musclebots Take Some Steps
Machine Copy
The Parts of Speech
Pronouns
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Where rivers run uphill
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In Antarctica watch the heat (and your step)
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Burst Busters

Explosions on Earth are a pretty big deal. In outer space, though, things are blowing up all the time. Two new studies show that a particularly powerful type of explosion is 10 times as common, but not always as powerful, as astronomers had thought. The explosions are called gamma-ray bursts. One seems to appear whenever a dying star collapses and becomes a spinning black hole or neutron star. Particles burst out of a doughnut-shaped disk that surrounds the collapsed star, producing gamma rays. A leading theory proposes that all gamma-ray bursts have the same amount of energy. In that case, the energy we detect here on Earth mostly depends on how far away the explosion is and how much of the blast is aimed in our direction. New data cast doubt on that assumption. On Dec. 3, 2003, a European satellite called INTEGRAL recorded an unusual gamma-ray burst officially labeled GRB 031203. Two teams, one from Russia and one from California, looked closely at the data. They found that the burst happened in a galaxy that is relatively close to us, just 1.3 billion light-years away. Oddly, though, it had only about one-thousandth as much energy as do bursts that come from much farther away. Analysis of the afterglow confirmed that the burst was a low-energy event. Astronomers might be missing many gamma-ray bursts because they've been looking only for high-energy explosions, the researchers say. In October, the scheduled launch of a satellite called Swift might help resolve the issue. Swift is designed to register fainter bursts than telescopes on Earth normally detect.E. Sohn

Burst Busters
Burst Busters








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