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Where Did Viruses Come From?

Where Did Viruses Come From?

Season 1 Episode 45
7:29
When Fish First Breathed Air

When Fish First Breathed Air

Season 1 Episode 46
8:40
Dinosaurs

How the T-Rex Lost Its Arms

Season 1 Episode 47
6:54
FAQs From Our First Year

FAQs From Our First Year

Season 1 Episode 48
9:20
When Insects First Flew

When Insects First Flew

Season 1 Episode 49
8:38
When Fish Wore Armor

When Fish Wore Armor

Season 1 Episode 51
9:37
When Birds Had Teeth

When Birds Had Teeth

Season 1 Episode 52
11:29
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Eons

That Time It Rained for Two Million Years

Season 1 Episode 43

At the beginning of the Triassic Period, with the continents locked together from pole-to-pole in the supercontinent of Pangea, the world is hot, flat, and very, very dry. But then 234 million years ago, the climate suddenly changed for the wetter.

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When Ichthyosaurs Led a Revolution in the Seas
9:38
When Ihthyosaurs led a revolution in the seas.
When the Synapsids Struck Back
10:10
Our world is the way it is because of the time when the synapsids struck back.
How Evolution Works (And How We Figured It Out)
12:09
We’ll try to explain how evolution actually works and how we came to understand it.
The Hellacious Lives of the "Hell Pigs"
7:17
There is some evolutionary method to the anatomical madness that is the "hell pig."
The History of Climate Cycles (and the Woolly Rhino)
13:14
The History of Climate Cycles (and the Woolly Rhino) Explain
The Croc That Ran on Hooves
8:41
How did this living nightmare come to evolve?
The Mystery Behind the Biggest Bears of All Time
10:41
The Mystery Behind the Biggest Bears of All Time
When We Tamed Fire
11:46
The ability to make and use fire has fundamentally changed the arc of our evolution.
Ancient Fauna, Flora & Fungi
11:38
Sea scorpions thrived for 200 million years, coming in a wide variety of shapes and sizes.
When We First Made Tools
9:08
When We First Made Tools
The Giant Bird That Got Lost in Time
8:33
The California condor is the biggest flying bird in N. America since the Pleistocene Epoch
The Island of Huge Hamsters and Giant Owls
11:41
The Island of Huge Hamsters and Giant Owls
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