It's a classic of the genre--debunking American irrationality--and it has just released in paperback with a new cover, and much else. Its author was also one of our most popular guests on Point of Inquiry (listen here). They're the New Yorker's Michael Specter and Denialism: How Irrational Thinking Harms the Planet and Threatens Our Lives, and I recommend both heartily. You can order the book here, and listen to Specter on Point of Inquiry here.