Discovery of Earth-size planets, search for intelligent life

Aired: 11/5/2013 | 0:05:48 | Clip
New data from the Kepler Spacecraft shows one in five of the sun-like stars in the universe have Earth-size planets. The potential for habitable planets has fueled excitement in the search for intelligent life. Jeffrey Brown speaks to one of the lead researchers, Geoff Marcy of the University of California, Berkeley.

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