Documentary development of the science behind the idea of six degrees of separation.
Originally thought to be an urban myth, it now seems that nobody on the planet can be connected in just a few steps from the association.
Six degrees of separation is also found in the heart of a major scientific advance.
That could be a law that nature uses to organize itself and now promises to solve some of the deepest mysteries.
31 years ago, NASA experienced one of the greatest disasters in the history of the space program. The space shuttle Challenger broke apart just 73 seconds into the flight.The disas...