Cosmos: A Space-Time Odyssey: The Immortals
May 19, 2014 5:55 AM - Season 1, Episode 11 - Subscribe
On the possibility of life elsewhere in the universe. How meteorites may carry life between worlds, as well as allow earthly life to have survived the scouring of the earth's surface in its early history. The possibility and potential problems of communicating with intelligent extraterrestrial life. How civilizations die, and how ours may survive.