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Episode 223: Extreme Life

Play Jun 11•4:27

A former NASA astronaut is searching for signs of hardy life on Mount Everest, which could provide a window into extreme environments that organisms might inhabit on hostile-appearing planets elsewhere in universe. Scott Parazynski's mission makes him the first astronaut to scale Mount Everests. AOL on the astronaut's trip. Discovery Channel Q&A with astronaut Scott Parazynski. Space....

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