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Episode 5: The Calling

The Calling

Season 4 Episode 5
53:05
When Whales Could Walk

When Whales Could Walk

Season 51 Episode 1
53:31
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Eons

When the Amazon Flowed Backwards

Season 7 Episode 10

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?

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Learn about the complicated the history of mammals and their disappearance.
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Where are all the east coast dinosaurs?
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Where did our moon come from? The origin is even stranger than you may imagine.
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Maybe there wasn’t just one so-called "cradle of humankind"?
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How did such a strange plant like cannabis come to be in the first place?
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