Science historian Naomi Oreskes, well known for her work on consensus in science (and climate science in particular) has a new book, Merchants of Doubt, due out in a couple of months. Helpfully sub-titled How a Handful of Scientists Obscured the Truth on Issues from Tobacco Smoke to Global Warming, it digs deep into the historical roots of the campaign to create doubt abut the need for action on a host of environmental issues. The video above is of a talk she gave at Brown University recently, outlining the material in the book. If you’re interested in the roots of the campaign against action on climate, this is an excellent overview. We’ll have a review of the book soon after it’s available.