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Join hosts Hank Green, Kallie Moore, and Blake de Pastino as they take you on a journey through the history of life on Earth. From the dawn of life in the Archaean Eon through the Mesozoic Era — the so-called “Age of Dinosaurs” -- right up to the end of the most recent Ice Age.

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Full Episodes
Season
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Episode
11:27
Eons

How Humans Lost Their Fur

This small change in our appearance has helped shape the evolution of our entire lineage.
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Episode
7:53
Eons

The Rise and Fall of the Tallest Mammal to Walk the Earth

It arose from rhino ancestors, but Paraceratherium took a different evolutionary path.
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Episode
8:48
Eons

How Plankton Created A Bizarre Giant of the Seas

Aegirocassis may have been the biggest animal in the Early Ordovician.
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Episode
6:46
Eons

Why Do Things Keep Evolving Into Crabs?

What is it about the crab’s form that makes it so evolutionarily successful?
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Episode
7:52
Eons

How Ankylosaurs Got Their Clubs

We’ve only started to get to the bottom of how clubs worked and how it developed.
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Episode
9:48
Eons

How Plants Became Carnivores

How and why does botanical carnivory keep evolving?
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Episode
8:54
Eons

The First and Last North American Primates

Our primate family tree actually originated here!
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Episode
8:23
Eons

When Rodents Had Horns

The horns probably had a purpose - one that rodents would likely benefit from today.
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Episode
6:27
Eons

The Sea Monster from the Andes

How did this giant marine reptile end up high in the Andes Mountains?
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Episode
9:43
Eons

How Ancient Art Captured Australian Megafauna

What if the rock art drawings of strange animals really existed?
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Science & Nature
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Preview
0:30
Extra Life: A Short History of Living Longer

Preview

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Clip
4:38
Greta Thunberg: A Year to Change the World

Direct Air Capture

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Clip
4:23
Greta Thunberg: A Year to Change the World

COVID-19's Impact on Climate

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Clip
3:55
Greta Thunberg: A Year to Change the World

Reindeer Face Starvation

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Clip
4:25
Greta Thunberg: A Year to Change the World

Athabasca Glacier