A new report from the U.N. International Panel on Climate Change finds that scientists are 95 percent certain that humans are in part to blame for rising temperatures. More than 800 authors and 50 editors from dozens of countries took part in its creation. Climate change activist Tim DeChristopher spent two years in jail as part of his fight to make climate change matter. He’s the founder of Peaceful Uprising and his fight to save public lands from oil and gas leasing is chronicled in the documentary Bidder 70. He joins us to discuss the new report and the state of the climate change movement. (Photo: Courtesy of Tim Dechristopher)