Naomi Oreskes on Climate Change & The Merchants of Doubt (Interview)

Given the overwhelming consensus of the scientific community, where does climate change doubt come from? Naomi Oreskes, historian of science and author of Merchants of Doubt, explains the story of the secretive climate denial machine and who some of the key players who have been sowing doubt, and blocking action on the greatest threat facing our society, and what they learned from Big Tobacco.