In 1994 ABC World of Discovery produced a documentary entitled Earthquakes The Terrifying Truth. With the help of astonishing footage and interviews, host Martin Sheen reveals the shocking secrets of this natural born killer. Factual, fascinating and frightening, this timeless document unleashes the truth about the earth's most violent disasters. See and hear the segment with Dr. Charles Merguerian explain his early work on the fault history of the NYC water tunnels in NYC and the field evidence and dire predictions for a potentially devastating earthquake.