Plot: Travel back in time to look at three of the largest mass extinctions that have decimated life on the planet. What caused these wipeouts?
Superscience - Season 7 - Human Extinction (Episode 1)
Episode Aired On:
Saturday, January 15 2005
20 years ago
Saturday, January 15 2005
20 years ago
Genres: Documentary, Sci-Fi & Fantasy
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Episode 20