A file photo from 2011 shows a man touching a giant bronze sculpture of a mammoth in the Siberian city of Khanty-Mansiysk. A team of Russian and South Korean scientists who found a well-preserved frozen woolly mammoth carcass this month say it also included blood. Natalia Kolesnikova/AFP/Getty Images hide caption

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The SciFri Book Club Takes a Hike
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Channel-billed toucans are important seed dispersers in rain forests. Courtesy of Lindolfo Souto/AAAS/Science hide caption

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Big-Mouthed Toucans Key To Forest Evolution
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Whenever a steer or cow leaves a farm in Michigan or goes to a slaughterhouse, it passes by a tag reader, and its ID number goes to a central computer that keeps track of every animal's location. Dan Charles/NPR hide caption

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Michigan Tracks Cattle From Birth To Plate
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Ga. Center Takes Pets When Families Have To Evacuate
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Dolphin Helps Navy Recover Rare Torpedo Under The Sea
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'Crazy Ants' Spreading In The Southeastern US
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Having a Dog May Mean Having Extra Microbes
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