Skip to main content

Up Next

How Humans Lost Their Fur

How Humans Lost Their Fur

Season 3 Episode 27
11:27

When Lizards Took Over the World

Season 3 Episode 28
8:29
When the Earth Suddenly Stopped Warming

When the Earth Suddenly Stopped Warming

Season 3 Episode 29
10:21
The Triassic Reptile With "Two Faces"

The Triassic Reptile With "Two Faces"

Season 3 Episode 30
10:11
The Reign of the Hell Ants

The Reign of the Hell Ants

Season 3 Episode 32
10:09
When We First Talked

When We First Talked

Season 3 Episode 34
11:13
The Genes We Lost Along the Way

The Genes We Lost Along the Way

Season 3 Episode 36
12:01
Back to Show
Eons

Why Do Things Keep Evolving Into Crabs?

Season 3 Episode 24

For some reason, animals keep evolving into things that look like crabs, independently, over and over again. What is it about the crab’s form that makes it so evolutionarily successful that non-crabs are apparently jealous of it?

Support Provided By
Season
That Time It Rained for Two Million Years
7:31
234 million years ago, the climate suddenly changed for the wetter.
Journeys Through Geologic Time
12:34
The Cenozoic marks the rise of organisms that look a lot like us.
The Weird, Watery Tale of Spinosaurus
7:28
In 1912, a fossil collector discovered the world’s only known semi-aquatic dinosaur.
The Age of Reptiles in Three Acts
10:45
Reptiles in time grew to become some of the largest forms of life ever to exist on earth.
How the Chalicothere Split In Two
7:03
How did two of the same kind of animal end up looking so different?
How the Squid Lost Its Shell
8:05
Ancestors of cephalopods all had shells until it proved to be their biggest weakness.
What Was the Ancestor of Everything?
11:06
The search for our origins go back to a single common ancestor.
Inside the Dinosaur Library
7:19
We talk to Amy Atwater, Collections Manager at the Museum of the Rockies.
The Most Useful Fossils In The World
5:49
Mysterious fossils can be used to tell time in the deep past.
What a Dinosaur Looks Like Under a Microscope
8:09
What has been observed and learned from putting dinosaur bones under a microscope.
How the Turtle Got Its Shell
8:29
Where did turtles come from? And how did the they get their shells?
The Other Explosion You Should Know About
6:25
The Sudden burst of diversity that marked the dawn of truly complex life on our planet.
Active loading indicator