Lee M. Silver is a professor at Princeton University in the Department of Molecular Biology and the Woodrow Wilson School of Public and International Affairs. He is the author of "Remaking Eden," described in the New England Journal of Medicine as providing "a panoramic view of molecular genetics, sexual reproduction, in vitro fertilization, and cloning." His newest book is "Challenging Nature." According to one reviewer, Silver "gleefully eviscerates the motley preachers, pundits, philosophers, and politicians who, he argues, hinder science on the basis of a vague belief that biotechnology trespasses where mere mortals dare not go."