Scientists speculate on how life originated on earth based on the range of conditions where life survives today and the conditions that existed on the early earth. They then look for those ... See full summary »

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Cast

Episode credited cast:
Abigail Allwood ...
Herself - Phd. earth science, NASA / Jet Propulsion Laboratory
Lee Bebout ...
Herself - NASA Ames Research Center (as Dr. Leslie Prufert-Bebout)
Adrian Brown ...
Himself - SETI Institute
David Grinspoon ...
Himself - Phd., Astrobiologist
Jennifer Heldmann ...
Herself - NASA Ames Research Center
Geoff Marcy ...
Himself - Phd., Astronomer, University of California Berkeley
Chris McKay ...
Himself - Astrobiologist
Seth Shostak ...
Himself - SETI Institute
Erik Thompson ...
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Storyline

Scientists speculate on how life originated on earth based on the range of conditions where life survives today and the conditions that existed on the early earth. They then look for those conditions, past or present, that may exist on other planets or moons. Written by David Foss

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29 January 2008 (USA)  »

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