climate science

Warming Climate May Cut Cloud Cover

Jan 2, 2014
One of the great unknowns of climate science is what effect clouds have in accelerating or slowing warming. A new study sheds a disturbing light on their possible impact.
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A Power to Act on Warming

Feb 26, 2013
The test of President Obama's seriousness about addressing climate change is not his pending decision on the much-debated Keystone XL pipeline. It's whether he effectively consigns coal-fired power plants -- one of the biggest sources of carbon emissions -- to the ashcan of history.