Photo: Dire Global Warming Forecast Issued by UN Panel

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A graphic shows how some species are affected by changes in global surface temperatures.

A United Nations panel warned of mass extinctions and a significant rise in sea levels as a result of global warming, which it described as "unequivocal." The warning came in a report released Saturday, November 17, 2007.

Graphic by Mike Sudal and Susan Hoffmann/AP; Data from Intergovernmental Panel on Climate Change and NASA

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