Global Warming

The Scientific Debate On Global Warming In One Chart

The next time someone tries to tell you that there's a legitimate scientific debate about man-made global warming, point them to this chart.

It was created by James Powell, an MIT-trained geochemist, longtime Oberlin professor, and former member of the National Science Board (under Presidents Reagan and George H.W. Bush). He searched for all studies published in 2013 that mentioned "global warming," "global climate change," or "climate change," and found 10,885 of them.

Powell combed through the papers and found only two that rejected the idea that humans are responsible for climate change.