MIT's Tom Levensonhosts VS Science on the third Wednesday of the month to discuss history of science, economics, and some climate science.

Science Historian Naomi Oreskes, author of "Merchants of Doubt, How a Handful of Scientists Obscured the Truth on Issues from Tobacco to Global Warming," has a long-standing interest in understanding the establishment of scientific consensus and the role and character of scientific dissent. Follow @TomLevenson