Chile, Haiti Quakes Explained
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Limited Understanding Of Animals In Theme Parks
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Neurologist Francis Jensen examining a teenage patient. Jensen decided to study the teenage brain when her own sons became teenagers. Now Jensen lectures to teens and parents about how teenagers' brains are different. Richard Knox/NPR hide caption

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The Teen Brain: It's Just Not Grown Up Yet
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Lifelong learning and brain stimulation can help increase memory and decision-making ability, according to neuroscientists. iStockphoto hide caption

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The Aging Brain Is Less Quick, But More Shrewd
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New Research Sheds Light On Antarctic Ice Melting
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Why Earthquakes Are Growing Deadlier
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Chile's Buckling Part Of Earthquake Belt
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Sizing Up The Tsunami: Why It Wasn't So Big
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Chile Quake Far Stronger Than That Of Haiti
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The northern lights dance over the Knik River near Palmer, Alaska. Activity on the surface of the sun creates this natural light show, but severe solar storms could devastate Earth's power and water utilities, and knock out communications. Bob Martinson/AP hide caption

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Solar Storms Could Be Earth's Next Katrina
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A 60-mile-long iceberg known as B9B, right, crashes into the Mertz Glacier Tongue, left, in the Australian Antarctic Territory on Saturday. The collision created a new 48-mile-long iceberg. AP Photo/Commonwealth of Australia hide caption

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The Early Picture Of Darwin Evolves
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The Small Parts That Drive The Universe
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Can Underwater Parks Protect Coral?
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Study Suggests Sperm Whales Herd Prey
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