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When Sharks Swam the Great Plains

When Sharks Swam the Great Plains

Season 2 Episode 5
11:45

When Apes Conquered Europe

Season 2 Episode 6
8:08
When Humans Were Prey

When Humans Were Prey

Season 2 Episode 8
9:21
How Blood Evolved (Many Times)

How Blood Evolved (Many Times)

Season 2 Episode 9
9:56
The Humans That Lived Before Us

The Humans That Lived Before Us

Season 2 Episode 10
11:52
The Island of Shrinking Mammoths

The Island of Shrinking Mammoths

Season 2 Episode 11
11:20
The Giant Bird That Got Lost in Time

The Giant Bird That Got Lost in Time

Season 2 Episode 15
8:33
When We First Made Tools

When We First Made Tools

Season 2 Episode 16
9:08
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Eons

How Sloths Went From the Seas to the Trees

Season 2 Episode 4

The story of sloths is one of astounding ecological variability, with some foraging in the seas, others living underground, and others still hiding from predators in towering cliffs. So why are their only living relatives in the trees?

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The Ghostly Origins of the Big Cats
7:32
Scientists have recently discovered a major clue about the origins of the big cats.
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.
A Short Tale About Diplodocus' Long Neck
9:18
Long necks gave sauropods an advantage when it came to food, but not in the way you think.
How South America Made the Marsupials
9:51
Throughout the Cenozoic Era marsupials flourished all over South America.
The Giant Dinosaur That Was Missing a Body
12:00
Other than its bizarre arms, very little material from this dinosaur had been found.
The Neanderthals That Taught Us About Humanity
9:09
Neanderthals actually behaved -- and likely thought and felt -- a lot like we do.
That Time the Mediterranean Sea Disappeared
11:10
How could a body of water as big as the Mediterranean just...disappear?
The Fuzzy Origins of the Giant Panda
8:20
The Fuzzy Origins of the Giant Panda
The Forgotten Story of the Beardogs
9:37
Beardogs are key to understanding an important branch of the mammal family tree.
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