At a time when our planet is in dire peril, Americans mistrust science more than ever. Few journalists appreciate what is at stake better than Michael Specter, who has spent the last twenty years reporting on everything from the AIDS epidemic to the digital revolution. In Denialism, he eloquently shows how, in a world where protesters march against childhood vaccines and Africans starve to death rather than import genetically modified grains, we must reconnect with the rational thinking that has underpinned the advance of civilization since the eighteenth century. What emerges is a manifesto that brilliantly captures one of the pivotal clashes of our era.