There is now near unanimous consent among Republican congressional leadership and likely 2016 contenders that the climate is changing. But that's as far as the GOP climate consensus goes, and it's a far cry from the conclusion of the vast majority of scientists who say that human activity is a primary driver of global warming. Many would-be 2016 contenders publicly question the extent to which man-made greenhouse gas emissions contribute. And few say that the U.S. should take action to cut emissions.
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