Photosynthesis from space: NASA photographs light emitted from plants.

NASA Beautifully Observes Photosynthesis From Space (VIDEO)

NASA Beautifully Observes Photosynthesis From Space (VIDEO)

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July 25 2013 2:44 PM

NASA Beautifully Observes Photosynthesis From Space (VIDEO)

NASA's observations help scientists determine where plant life is healthy and where it's stressed.