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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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Season
The Risky Paleo Diets of Our Ancestors
7:59
Part of a secret to our success as a species has been our early experimentation with food.
When a Billion Years Disappeared
11:09
Some rocks below the Great Unconformity are 1.2 billion years older than those above it.
How Dogs (Eventually) Became Our Best Friends
9:21
It took thousands of years of interactions to develop our deep bond with dogs.
How the Egg Came First
8:44
We’re here to tell you: The egg came first.
When We Took Over the World
11:47
When We Took Over the World
The Ghostly Origins of the Big Cats
7:32
Scientists have recently discovered a major clue about the origins of the big cats.
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12:18
Is it possible that monsters that populate our legends were influenced by the fossil record?
When Giant Lemurs Ruled Madagascar (ASL)
10:09
Just a few thousand years ago, Madagascar was inhabited by giant lemurs.
When Penguins Went From The Sky To The Sea
10:33
They evolved from a flying ancestor.
When the Sahara Was Green
7:50
The climate of the Sahara was completely different thousands of years ago.
How a Hot Planet Created the World's Biggest Snake
7:45
The greatest snake that the world ever saw was made possible by a warming planet.
When the Rainforests Collapsed
7:40
If it weren't for the collapse, our ancestors might never have made it out of the swamps.
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