Turning down the world’s temperature: A job for a fake tree? A boat?

By Brian Palmer

Special to The Washington Post
Monday, November 29, 2010; 6:41 PM

In case you haven’t heard, the Earth is getting hotter, and most scientists blame mankind. The average global temperature has risen 1.3 degrees in the last century, and the future might be quite a bit warmer. As international climate negotiators convene in Cancun, Mexico, this week, the Intergovernmental Panel on Climate Change is projecting that the temperature could rise as many as 10 degrees more by the year 2100 if we do nothing to stop it.

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