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Season 19, episode 14. Keep your place, move between servers, and stay ready for the next episode.
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Rafting Through the Grand Canyon
NOVA explores Earth's greatest natural wonder by rafting down the river that created it, repeating the spectacular first canyon voyage of the 19th-century explorer John Wesley Powell. The Grand Canyon tells the story of nearly 2 billion years of earth history plus the changes caused by three decades of human intervention.
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Episode 10: Animal Olympians II