Reference Shelf: UFOs

How can we turn Unidentified Flying Objects (UFOs) into Identified Flying Objects (IFOs)? This issue of ?The Reference Shelf? looks at the fantasies and realities of UFOs in American culture. Articles examine such topics as the existence of Area 51 and the recent popular movement to reveal government secrets over UFO sightings. Other sections cover scientific data on UFOs, the scientific study of extraterrestrial life, and the evolution of alien fantasies in American popular culture.