Searching for Alien Earths: Prof. Lisa Kaltenegger [Carl Sagan's 90th Birthday]

In the opening science talk for Carl Sagan's 90th Birthday, Carl Sagan Institute Director Lisa Kaltenegger explains the current state of the search for Earth-like planets!

Stay tuned for more clips from the event, or watch the entire recording here:    • Carl Sagan's 90th Birthday: An Arts Unplug...