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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
When We First Walked

When We First Walked

Season 1 Episode 57
10:56
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Eons

Where Did Viruses Come From?

Season 1 Episode 45

There are fossils of viruses, of sorts, preserved in the DNA of the hosts that they’ve infected. Including you. This molecular fossil trail can help us understand where viruses came from, how they evolved and it can even help us tackle the biggest question of all: Are viruses alive?

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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.
Were These Monsters Inspired by Fossils?  (ASL)
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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