He has a degree in Archaeology and Medieval History and a PhD in British Folklore. He has been investigating and researching UFOs and paranormal phenomena for twenty years and is the author of seven books and numerous articles in newspapers and magazines. His books include Phantoms of the Sky: UFOs - A Modern Myth (with Andy Roberts) and A Guide to Britain's Pagan Heritage, both published by Hale. David Clarke lives in Sheffield and works as a freelance journalist in public relations.