Encyclopedia of the Unexplained

This is a comprehensive encyclopedia of unexplained phenomena, based largely on the authors' first-hand studies. It covers such topics as "the supernatural Earth", "space invaders", "the spiritual dimension" and "strange beings". Chapters within these sections concentrate on a particular phenomenon, such as crop circles, UFOs, thoughtography and the "men in black". Each chapter contains a summary of the salient points in each case, with a list of researchers on the subject. An extensive index allows easy access to specific cases.