In Doubt Is Their Product, author David Michaels explains how many of the scientists who spun science for tobacco have become practitioners in the lucrative world of product defense. Whatever the story- global warming, toxic chemicals, sugar and obesity, secondhand smoke- these scientists generate studies designed to make dangerous exposures appear harmless. At its heart, "Doubt Is Their Product" documents the way in which scientists who specialize in "product defense" have manipulated the scientific literature, manufactured and magnified scientific uncertainty, and influenced policy decisions to the advantage of private interests, rather than in the interests of the public. Michaels explains how the current Administration has changed the rules under which federal agencies operate, limiting the government's ability to reject mercenary science.