Gazing Up At A Double Sun

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Unwinding The Cucumber Tendril Mystery

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Meet Your Ancient Relatives: The Denisovans

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A replica of the pinky bone fragment found in a Siberian cave. Researchers used the bone bit to extract and sequence the genome of a girl who lived tens of thousands of years ago. Max Planck Institute for Evolutionary Anthropology hide caption

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Pinky DNA Points To Clues About Ancient Humans

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Research suggests basic forms of learning are possible while snoozing. iStockphoto.com hide caption

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Can You Learn While You're Asleep?

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A PET scan of the brain of a person with Alzheimer's disease. U.S. National Institute on Aging/Wikimedia Commons hide caption

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David Eagleman Gets Inside Our Heads

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Curiosity Rover Zaps A Rock, Starts To Roll

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The Larsen B ice shelf, a large floating ice mass on the eastern side of the Antarctic Peninsula, shattered and separated from the continent 10 years ago. A NASA satellite captured the event in this image from Feb. 23, 2002. The 650 foot-thick, 1,250-square-mile ice shelf had existed since the last ice age. AP hide caption

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Humans' Role In Antarctic Ice Melt Is Unclear

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Childhood obesity is on the rise in many countries and overuse of antibiotics is now on the radar as a possible factor in the epidemic. Here 18-month-old twins are weighed in a nutritionist's office in Colombia. Raul Arboleda/AFP/Getty Images hide caption

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Factory Conditions Improve Where iPads Are Made

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Are Independents Just Partisans In Disguise?

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It may not be the best strategy to stay up late and cram. A new study finds that when teens don't get the sleep they need, all kinds of things can go poorly. iStockphoto.com hide caption

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High School Daze: The Perils Of Sacrificing Sleep For Late-Night Studying

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