Science and technology

Associated Press
FILE - In this Wednesday, Dec. 16, 2009 file photo, steam and smoke rises from a coal burning power plant in Gelsenkirchen, Germany. After an all-night session, the U.N.'s expert panel on climate science is scrambling to finish a report on global warming that's meant to guide negotiations on a new international climate deal. (AP Photo/Martin Meissner, File)

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