This is a lively, commonsense compendium of detailed information on all things supernatural, occult, paranormal, and pseudoscientific. Written by an author with the most popular skeptical site on the Internet, The Skeptic?s Dictionary features close to 400 definitions, arguments, and essays on topics ranging from alchemy to zombies. It covers such categories as alternative medicine; cryptozoology; extraterrestrials and UFOs; frauds and hoaxes; junk science; logic and perception; New Age energy; science and philosophy; and the psychic. For skeptics looking for more substantive information on which to base their skepticism, and for those with a simple desire to learn more, this volume offers a remarkable range of information that puts to the test the best arguments of true believers.