Created scientific controversies emerge when expert communities are in broad agreement but the public perception is one of profound scientific uncertainty and doubt. In the first book-length analysis of the concept of a created scientific controversy, David Harker explores issues including climate change, creation science, the anti-vaccine movement, and genetically modified crops. Drawing on work in cognitive psychology, social epistemology, critical thinking, and philosophy of science, he shows readers how to better understand, evaluate, and respond to the appearance of scientific controversy.