Sleep, First Primates, Earthquakes in the Midwest,...
Special | 52m 26sVideo has Closed Captions
Season 4: Episode 8
Season 4: Episode 8
Problems playing video? | Closed Captioning Feedback
Problems playing video? | Closed Captioning Feedback
Funding for NOVA is provided by David H. Koch, the Corporation for Public Broadcasting and PBS viewers. Additional funding is provided by George D. Smith.
Sleep, First Primates, Earthquakes in the Midwest,...
Special | 52m 26sVideo has Closed Captions
Season 4: Episode 8
Problems playing video? | Closed Captioning Feedback
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Funding for NOVA is provided by David H. Koch, the Corporation for Public Broadcasting and PBS viewers. Additional funding is provided by George D. Smith.