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Early Life on Earth

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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A Tale of Tusks and Saber Teeth
25:37
The first saber-teeth and tusks evolve in the Late Permian and our ancestors, the cynodonts, appear.
The Rise and Fall of an Ancient Reef | Life and Death on Pangea
25:37
An extinction in the Middle Permian decimates life, from a fossil reef to our ancient relatives.
How Eating Plants Shaped Life on Land | Life and Death on Pangea
25:37
The first herbivorous vertebrates evolve on the side of the amniote family tree leading to mammals.
How The Formation of Pangea Changed The World | Life and Death on Pangea
25:37
Seed plants and amniotes adapt to dry climates, helping them thrive on Pangea in the Permian Period.
How A Geological Event Created The Ultimate Cat
9:11
How did Homotherium evolve to be so successful? The answer may lie in the rise of the Tibetan plate.
Did These Feathered Wings Evolve to Be Scary?
10:16
The mystery of what non-flying dinosaurs were doing with their feathered wings has a new hypothesis.
We Can't Remember What Giant Sloths Were Like
11:45
What did ancient people once know about these bizarre megafauna that we’ve since forgotten?
Did These Mammoths Dig Their Own Grave?
7:44
5,700 years ago, woolly mammoths crossed a remote tundra island off Alaska.
When Fish (Finally) Conquered the Deep Sea
9:48
Why did vertebrates conquer both the land and the air before the depths of the sea?
Why Do Humans Age Fast?
8:27
Long-extinct dinosaurs may still haunt us—possibly driving us to age faster than any vertebrate.
When the Earth Had Supermountains
9:34
Only twice in Earth's history have supermountains risen, and both times reshaped life forever.
Does The World's Most Famous Dinosaur Have The Wrong Name?
12:32
Was the T-Rex given the wrong name?
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