Breakthrough Announced In Climate Talks

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Obama: Danger Of Climate Change Grows

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Climate Conference Winding Down In Copehagen

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Answering Listeners' Questions On Climate Summit

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China Refuses To Put Climate Commitment In Writing

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Rich, Poor Nations Divided Over Reducing Emissions

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Nuclear power plants like this one in Middletown, Pa., currently supply 20 percent of the nation's electricity. Some legislators want them to provide more, but it's turning into quite a sticky subject. Carolyn Kaster/AP hide caption

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The Climate Conundrum Over Nuclear Energy

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3 Senators Strike Climate Legislation Compromise

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Climate-Change Limit: 2 Degrees Celsius

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For Public, Climate Change Not A Priority Issue

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Coal-fueled power stations like this one in Warrington, United Kingdom, are said to be contributing to global warming. But e-mail messages stolen from a group of climate scientists recently are fodder for skeptics who say global warming is a plot, not a real problem. Christopher Furlong/Getty Images hide caption

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Stolen Climate E-Mails Cause A Ruckus In Congress

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Stolen E-Mails Raise Questions On Climate Research

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North America was once home to mammoths, mastodons (above) and beavers the size of black bears. Barry Roal Carlsen/University of Wisconsin-Madison hide caption

toggle caption Barry Roal Carlsen/University of Wisconsin-Madison

Fungus Provides Clues To North American Extinctions

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Reef Conservation Strategy Backfires

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