Two kinds of philosophical questions are raised by the current public debate about climate change; epistemic questions (Whom should I believe? Is climate science a genuine science?), and ethical questions (Who should bear the burden? Must I sacrifice if others do not?). Although the former have been central to this debate, professional philosophers have dealt almost exclusively with the latter. This book is the first to address both the epistemic and ethical questions raised by the climate change debate and examine the relationship between them.