David Hatcher Childress is the author of numerous books that focus on ancient astronauts, UFOs, and anti-gravity. In Extraterrestrial Archaeology: Incredible Proof We Are Not Alone, Childress uses photographs, drawings, and maps to demonstrate that the moons and planets in our solar system were once, and still are, inhabited by extraterrestrial beings. Childress's Lost Cities series, which includes Lost Cities of North and Central America and Lost Cities and Ancient Mysteries of South America, takes the reader on an incredible adventure through time exploring ancient mysteries and lost civilizations. Other Childress books include Anti-Gravity Handbook and Man-Made UFO's 1944-1994: 50 Years of Suppression, which was written with Renato Vesco. Childress resides in Kempton, Illinois.