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The Triassic Reptile With "Two Faces"

The Triassic Reptile With "Two Faces"

Season 3 Episode 30
10:11
The Reign of the Hell Ants

The Reign of the Hell Ants

Season 3 Episode 32
10:09
When We First Talked

When We First Talked

Season 3 Episode 34
11:13
The Genes We Lost Along the Way

The Genes We Lost Along the Way

Season 3 Episode 36
12:01
How Worm Holes Ended Wormworld

How Worm Holes Ended Wormworld

Season 3 Episode 38
9:42
When Crocs Thrived in the Seas

When Crocs Thrived in the Seas

Season 3 Episode 41
9:08
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Eons

When the Earth Suddenly Stopped Warming

Season 3 Episode 29

For decades, scientists have been studying the cause of the Younger Dryas, and trying to figure out if something like it could happen again. And it turns out that what caused this event is the subject of a heated debate.