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When the Amazon Flowed Backwards

What did life look like when the Amazon watershed flowed backwards? How did its direction shape the evolution of life around it? And what force could have possibly been strong enough to up-end one of the world’s mightiest rivers between then and now?

Season 7 Episode 10 Length 11:25 Premiere: 12/03/24

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Season 7 Episodes

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Show Clips & Previews

Darwin's Unexpected Final Obsession

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S7 E20 Length 12:29 Premiere Date 05/06/25

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S7 E19 Length 08:36 Premiere Date 04/16/25

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S7 E16 Length 12:38 Premiere Date 03/11/25

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S7 E15 Length 09:59 Premiere Date 02/25/25

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S7 E14 Length 10:09 Premiere Date 02/11/25

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S7 E13 Length 10:39 Premiere Date 01/28/25

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S7 E12 Length 10:38 Premiere Date 01/14/25

When Neandertals Became Apex Predators

S7 E11 Length 11:50 Premiere Date 12/17/24

When the Amazon Flowed Backwards

S7 E10 Length 11:25 Premiere Date 12/03/24

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S7 E9 Length 12:10 Premiere Date 11/19/24

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How the Himalayas Changed the World

S7 E6 Length 10:04 Premiere Date 09/25/24

Where Did the Moon Come From?

S7 E5 Length 10:50 Premiere Date 09/25/24

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