Nonnative pythons, like this one, are invading the Florida Everglades. As a top predator, the snakes have crippled the populations of rabbits, raccoons and other animals. Joe Raedle/Getty Images hide caption

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Invasive Pythons Put Squeeze On Everglades' Animals

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Wolves Attract Tourists, But Reality Lurks

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Ancient Skull Holds Clues to Dog Domestication

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How 'Space Weather' Affects Planes And Power Grids

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Magnetic Soap May Help Clean Up Spilled Oil

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Without a centralized national repository for nuclear waste, the radioactive material is currently being kept at various sites across the country. Above, large concrete canisters, each holding 14 55-gallon drums of waste, are loaded on a truck in 2005 in Richland, Wash., where they were later shipped to a facility in New Mexico. Jeff T. Green/Getty Images hide caption

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How To Find A New Nuclear Waste Site? Woo A Town

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The new version of the map includes 13 zones, with the addition for the first time of zones 12 (50-60 degrees F) and 13 (60-70 degrees F). U.S. Department of Agriculture hide caption

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Even in the remote Faroe Islands, some children have high levels of perfluorinated compounds in their blood. The chemicals may interfere with the immune system. Stig Nygaard/Flickr hide caption

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Common Chemicals Could Make Kids' Vaccines Less Effective

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Op-Ed: The Verdict Is In On Climate Change

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A veiled chameleon (Chamaeleo calyptratus) at the Rolling Hills Wildlife Adventure outside Salina, Kan. Joel Sartore hide caption

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One Man's Quest To Capture America's Endangered Zoo Animals (With A Camera)

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Extreme Weather Rips Through The South

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