Joel Levy is a writer and journalist specializing in history and science. He is the author of more than a dozen books, including Newton's Notebook, Great Scientists, Mad Science (revealing the secret histories of madness, magic, and mysticism among great inventors and scientists), The Doomsday Book (a guide to scenarios for the end of civilization), History's Lost Treasures, and History's Worst Battles. He has also written features and articles for the national press, and has appeared on national television and numerous local and national radio shows. A long-term student of the history of science and medicine, Joel has a BSc in Biological Sciences and an MA in Psychology.