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NOVA
When Whales Could Walk
Season 51
Episode 1
A spectacular fossil graveyard reveals a 43-million-year-old whale that had four legs and could walk. Follow scientists as they search for new clues to how mammals moved from land into the sea to become the largest animals on Earth.
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53:35
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Experience the colossal geologic forces that shaped our continent over 3 billion years.
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53:41
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52:53
Can science help us understand why some people commit horrific acts of mass murder?
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52:52
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Take a wild ride into the quantum realm, where even the impossible seems possible.