Doomsday 2013 ~ National Geograhic Top Secrets

National Geograhic Top Secrets S01E02 Doomsday

According to some doomsday theorists, we are running out of time. Scientists and conspiracy writers break down the 10 worst-case doomsday scenarios, as well as secrets to support each theory. History has proven that a catastrophic earthquake occurs about every 500 years and the next could happen any day. With low birth rates around the world, human extinction could be on the horizon. From a viral pandemic to a giant asteroid, this special explores how the world might end sooner than we think.