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That Time the American West Blew Up

That Time the American West Blew Up

Season 5 Episode 15
9:57
The Hidden Genes That Make Us Human

The Hidden Genes That Make Us Human

Season 5 Episode 16
9:11
Nautiloids Thrived For 500 Million Years Until They Appeared

Nautiloids Thrived For 500 Million Years Until They Appeared

Season 5 Episode 17
9:54
We Were Wrong About The Dodo

We Were Wrong About The Dodo

Season 5 Episode 18
7:16
When Plants Doubled Their DNA

When Plants Doubled Their DNA

Season 5 Episode 19
8:52
It's Becoming Very Clear That Birds Are Not Normal

It's Becoming Very Clear That Birds Are Not Normal

Season 5 Episode 20
8:40
The Invisible Barrier Keeping Two Worlds Apart

The Invisible Barrier Keeping Two Worlds Apart

Season 5 Episode 21
8:03
A Natural History of Mars

A Natural History of Mars

Season 5 Episode 22
11:03
Why The Giraffe Got Its Neck

Why The Giraffe Got Its Neck

Season 6 Episode 1
9:01
We Helped Make Mosquitoes A Problem

We Helped Make Mosquitoes A Problem

Season 6 Episode 2
8:10
Did a Tsunami Swallow Part of Europe?

Did a Tsunami Swallow Part of Europe?

Season 6 Episode 3
8:03
That Time The Ocean Lost (Almost) All Its Oxygen

That Time The Ocean Lost (Almost) All Its Oxygen

Season 6 Episode 4
9:31
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Eons

How a Mass Extinction Changed Our Brains

Season 5 Episode 14

During one of the most pivotal moments in our evolutionary story our brains actually shrank relative to our bodies.
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