"Creationists who dismiss Darwin's theory of evolution. Parents who refuse to vaccinate their children. Climate change deniers who dismiss the warming planet as a hoax. These are just some of the groups that, despite robust scientific evidence, embrace pseudoscientific beliefs and practices. Why do they believe bunk? And how does their ignorance threaten us all? Noted skeptic Massimo Pigliucci sets out to separate the fact from the fantasy in this...