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

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Fungus Provides Clues To North American Extinctions
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Reef Conservation Strategy Backfires
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Lower Tuna Limit Still Too High, Researchers Say
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The Environmental Protection Agency has outlined a new effort to help protect and restore the Chesapeake Bay, the nation's largest estuary. Ron Edmonds/AP hide caption

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EPA Drafts Chesapeake Bay Cleanup Strategy
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Climate Rift Grows Between U.S., Poor Nations
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Astronomers Detect Most Distant Object Ever Seen
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A farmer harvests corn on a farm near Spring Mills, Pa. According to current biofuel laws, if you burn ethanol from corn in your car, the government doesn't count the carbon dioxide that comes out of the tailpipe as an actual carbon emission. Carolyn Kaster/AP hide caption

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Multimedia Audio
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Wes Jackson, founder of the Land Institute, at his farm in Salina, Kan. Richard Harris hide caption

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Prairie Pioneer Seeks To Reinvent The Way We Farm
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Future Unlikely For Kyoto Climate Treaty
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Gunnar Oquist (left), permanent secretary of the Royal Swedish Academy of Sciences, and Ingemar Lindstrom of the Academy sit next to portraits of the 2009 Nobel Physics Prize winners in Stockholm on Tuesday. Scanpix Sweden/Bertil Ericson/AP hide caption

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Fiber Optics, Imaging Pioneers Win Physics Nobel
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Pioneers Of Fiber Optics, Semiconductors Win Nobel
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Are This Week's Earthquakes Related?
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