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NASA Astrobiologist Jonathan Trent will go anywhere to find critters that could resemble extraterrestrials. Naill McKay reports. Discovery News: Life at Earth's Extremes More Videos Online

Discovery News: Life at Earth's Extremes

NASA Astrobiologist Jonathan Trent will go anywhere to find critters that could resemble extraterrestrials. Naill McKay reports.

Added: Jun 19, 2006
Views: 2024 Views
Runtime: 03:57

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