A brief history of misguided ideas: creationism, flat-Earthism, energy scams, and the Velikovsky affair.
To that, I'll add: perpetual motion, general pseudoscience, and end-of-the-world nonsense, all handled in depth and with great perception. Bob was a prolific technical writer, and the best of these are very knowledgeable about real science. He also served on the Board of Directors of the National Center for Science Education, including two years as its president.
Martin Gardner, in his review of the book, wrote:
No science fiction writer wrote about pseudoscience with greater accuracy and humor than Bob Schadewald. It is high time that his great contributions to the growing literature of respect for genuine science over bogus science were finally recognized.
Okay? Now I know that you have to have this book...!