Nova Sciencenow

Where Did We Come From?

Season 5, Episode 5 of 6

Where did the very first living thing on Earth come from? Can a simple injection erase a painful memory?

Previously Aired

Day
Time
Channel
2/16/2011
8 p.m.
2/17/2011
1 a.m.
2/20/2011
2 p.m.
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