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Season 42 Episode 20 | 53m 31s Video has closed captioning.
The epic 3 billion-year story of how our continent came to be. From the palm trees that once flourished in Alaska to titanic eruptions that nearly tore the Midwest in two, discover how forces of almost unimaginable power gave birth to North America.
Aired: 11/04/15
Funding for NOVA is provided by David H. Koch, the Corporation for Public Broadcasting and PBS viewers. Additional funding is provided by the Alfred P. Sloan Foundation and George D. Smith.
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