Skip to main content
Back to Show
Eons

When a Billion Years Disappeared

Season 3 Episode 3

In some places, the rocks below the Great Unconformity are about 1.2 billion years older than those above it. This missing chapter in Earth’s history might be linked to a fracturing supercontinent, out-of-control glaciers, and maybe the diversification of life itself.

Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
Support Provided By
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.
Active loading indicator