Little time left to turn down the world's heat, U.N. says

(CNN) - Your forecast for the next century: Hotter, drier and hungrier, and the chance to turn down the thermostat is slipping away.

That's the latest conclusion from the United Nations, which urged governments to address the "increasingly clear" threats posed by a warming climate before some options are closed off for good. The latest report from the Intergovernmental Panel on Climate Change concluded that taking steps to reduce the carbon dioxide emissions blamed for rising temperatures could buy more time to adjust to a warmer world.

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