National Geographic Channel Naked Science

Season 3 Episode 15

Extinctions

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Aired Thursday 8:00 PM Nov 02, 2006 on National Geographic
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Extinctions
AIRED:
Dominant life forms have been wiped out before as our planet has a history of mass extinctions. A huge asteroid impact is credited with the passing of the dinosaurs, but what caused the others? This hour examines three of the major extinctions in the Earth's history and the possibily of another occurring.moreless

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