Uncategorized
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PlanetsScratching the Martian surface
What’s Mars made of? Volcanic rock, glassy particles and a poisonous rocket-fuel chemical, among other things. That’s the latest from tests by NASA’s Curiosity rover.
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ClimateThe certainty of climate change
How sure are scientists that people are to blame for global warming? “Extremely likely,” says an international panel of climate change researchers in a new report.
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ChemistryCyberspace chemistry earns a Nobel
The achievements behind the 2013 Nobel Prize in chemistry relied on a lot of complex physics. But the computer techniques pioneered by these three men are now saving chemists a lot of work.
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Health & MedicineSleep therapy for fears
Scared? A nap spent inhaling the proper smell might relieve those fears, a study finds.
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ChemistryVitamin can keep electronics ‘healthy’
Vitamin E is among cheap materials that can avoid the zap of static electricity — a discharge that risks destroying sensitive electronic circuitry.
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Health & MedicineNobel goes for studying ‘school buses’ in cells
A trio of scientists who studied how cells transport materials — think of buses moving kids to and from school — will share a 2013 Nobel Prize.
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PhysicsHiggs brings physicists a Nobel
Anticipating the so-called “god particle” — and its critical role in explaining mass — captured the 2013 Nobel Prize in physics.
By Andrew Grant and Gabriel Popkin -
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MicrobesSlimming germs
In the gut, the right microbe mix can help keep off extra weight — at least in mice.
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Health & MedicineExplainer: Where and when did HIV begin?
The virus that causes AIDS may have evolved in monkeys or apes more than a century ago.
By Bryn Nelson -
EarthWorld’s biggest volcano is hiding under the sea
Tamu Massif is currently sleeping with the fishes some 2 kilometers (1.2 miles) below the surface of the Pacific Ocean.
By Janet Raloff -
BrainThe upside of cheating
Many people assume that cheaters and thieves will secretly feel shame or guilt. A new study challenges that. It finds that people who cheat without causing anyone much harm actually enjoy a little buzz afterward.