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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 Creature That Stumped Darwin
6:46
The Toxodon fossils help reveal the mystery surrounding evolution.
How the Starfish Got Its Arms
10:53
The Story of How the Starfish Got its Arms Reminds us that Animals have Deep Histories.
Where Are All the Medium-Sized Dinosaurs?
11:01
Learn More about the Very Rare Medium-Sized Dinosaurs.
The Island of the Last Surviving Mammoths
8:06
The very last mammoths that ever lived experienced what’s known as a mutational meltdown.
The Traits That Spawned the Age of Mammals
7:44
Some Mammal Traits Show Up a Lot Earlier and in Things That Weren’t Mammals at All.
Did These Giant Sloths Poop Themselves to Death?
10:01
Find out if Sloths Really Did Poop Themselves to Death.
Where Are All The Squid Fossils?
7:21
Solve the Mystery of Where All Squid Fossils Are.
How Weasels Got Skinny
9:01
Find Out Why and How Weasels Push the Limits on What is Metabolically Possible.
When Trees Took Over the World
7:28
Trees have a Far More Rooted History than You Think.
How To Survive the Little Ice Age
10:00
How did the Nunalleq village manage to survive and prosper during the Little Ice Age?
When Crocs Thrived in the Seas
9:08
Watch Metriorhynchids' journey to the Sea.
How Chilis Got Spicy (and Why We Love the Burn)
9:32
Learn about the History and Evolution of the Red (and other) Hot Chilli Peppers.
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