Episode 12

This episode was once again focused on the possibility of extraterrestrial life. However it used a more empirical approach than previous episodes did. It described our current efforts in through SETI and radio telescopes like the Arecibo Observatory. They use this data in the Drake equation and are able to determine what probability of life is present. Sagan does address some of the more hysterical claims of extraterrestrial life like ufo sightings but overall this episode described our big picture efforts.