Name: Skeptical scientist says climate change is real and caused by humans
Uploaded: Tue Jul 31 2012 00:00:00 GMT+0000 (UTC)
Description: Richard Muller, professor of physics at UC Berkeley, studied the veracity of global warming data, a project backed financially in part by the Koch Foundation. He joins The Rachel Maddow Show to talk about how data led to his conversion to believing that not only does climate change exist, but that humans are responsible.

July 31, 2012