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Home » Video » NOVA scienceNOW | Detecting Life

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NOVA scienceNOW | Detecting Life | PBS

Duration: 04:07

Once we find a planet that has Earth-like potential, how can we tell if there is life on it? Harvard astrophysicist Lisa Kaltenegger explains how scientists might sniff out life by looking at the planet's atmosphere.

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Post Date: June 19, 2009