Episode 1
The Trouble With Trilobites
10m
Trilobites are famous not just because they were so beautifully functional, or because they happened to preserve so well. They’re known the world over because they were everywhere!
Where to watch Eons
TV series
Eons
2017TV-Y76 seasons
Join hosts Hank Green, Kallie Moore, and Blake de Pastino as they take you on a journey through the history of life on Earth. From the dawn of life in the Archaean Eon through the Mesozoic Era — the so-called “Age of Dinosaurs” -- right up to the end of the most recent Ice Age. The evolutionary history of mammals including humans and other modern species is explored with these amazing paleontology experts.
Availability
Not streaming in United States
Checked Jul 22, 2026
Eons premiered June 26, 2017. We don't have a confirmed streaming, rental or purchase option yet.
Synopsis
Join hosts Hank Green, Kallie Moore, and Blake de Pastino as they take you on a journey through the history of life on Earth. From the dawn of life in the Archaean Eon through the Mesozoic Era — the so-called “Age of Dinosaurs” -- right up to the end of the most recent Ice Age. The evolutionary history of mammals including humans and other modern species is explored with these amazing paleontology experts.
Season 1 episodes
Choose an episode, then use the watch options above for the show.
Episode 2
When Did the First Flower Bloom?
10m
During the Cretaceous Period, dinosaurs were more diverse, more fierce, and more strange than ever. But something else was happening under the feet of the terrible lizards: for the first time in history, there were flowers.
Where to watch EonsEpisode 3
The Tully Monster & Other Problematic Creatures
10m
There are animals in the fossil record that challenge some of our most basic ideas about what animals are supposed to look like. If there ever was a monster on this planet that was worthy of the name, it might have been the Tully Monster.
Where to watch EonsEpisode 4
Stegosaurs: Tiny Brains & Thagomizers
10m
If you take it as a given that extinct dinosaurs were all weird and wonderful, then you gotta at least consider that Stegosaurus was one of the weirdest and wonderfulest.
Where to watch EonsEpisode 5
What Colors Were Dinosaurs?
10m
We know a lot about dinosaurs but there’s one question that has plagued paleontologists for decades: what color were they?
Where to watch EonsEpisode 6
The Story of Saberteeth
10m
Smilodon was a fearsome Ice Age cat, the size of a modern-day tiger, that had a pair of fangs nearly 18 centimeters long. But it was only the last and largest of the great sabertooths: ridiculously long canines had already been a trend for millions of years by the time Smilodon was prowling around. And you know what? Those giant teeth just might make a comeback.
Where to watch EonsEpisode 7
That Time Oxygen Almost Killed Everything
10m
What if we told you that there was a time when oxygen almost wiped out all life on Earth? 3 billion years ago, when the world was a place you’d never recognize, too much of a good thing almost ruined everything for everybody.
Where to watch EonsEpisode 8
The Biggest Thing That Ever Flew
10m
Today, we’re familiar with two types of flying vertebrates -- birds and bats. But over 66 million years ago, there was a giraffe-sized reptile that soared through the sky.
Where to watch EonsEpisode 9
Dimetrodon: Our Most Unlikely Ancestor
10m
With its lizard-like appearance and that distinctive sail on it back, Dimetrodon is practically the mascot of the Palaeozoic Era, a time before flowers, birds, mammals, and even crocodiles. But if you take a close look at this sail-backed animal, you might see a little bit of yourself.
Where to watch EonsEpisode 10
The Extinction That Never Happened
10m
Natural history is full of living things that were long thought to have gone extinct only to show up again, alive and well. Paleontologists have a word for these kinds of organisms: They call them Lazarus taxa.
Where to watch EonsEpisode 11
The Strange Case of the Buzzsaw Jaws
10m
There are many fossils that challenge our ability to form even the most basic idea of how a living thing looked, or lived, or functioned. One of the longest-running of these mysteries involved a 270-million-year-old sea creature called Helicoprion that once swam the seas around the supercontinent of Pangea.
Where to watch EonsEpisode 12
The Age of Giant Insects
10m
Insects outnumber humans by a lot and we only like to think we're in charge because we're bigger than they are. But insects and other arthropods weren’t always so small. About 315 million years ago during the Carboniferous Period, they were not only abundant: they were enormous.
Where to watch EonsEpisode 13
History's Most Powerful Plants
10m
Fossil fuels are made from the remains of extinct organisms that have been exposed to millions of years of heat and pressure. But in the case of coal, these organisms consisted largely of some downright bizarre plants that once covered the Earth, from Colorado to China.
Where to watch EonsEpisode 14
How Did Dinosaurs Get So Huge?
10m
Part of why we’re so fascinated with extinct dinosaurs it’s just hard for us to believe that animals that huge actually existed. And yet, they existed! From the Jurassic to the Cretaceous Periods, creatures as tall as a five-story building were shaking the Earth.
Where to watch EonsEpisode 15
When The Earth Was Purple
10m
Besides the blue of the oceans, the dominant color of our planet, as we know it, is green. But imagine a time when the Earth looked a little … purple.
Where to watch EonsEpisode 16
'Living Fossils' Aren't Really a Thing
10m
Crocodiles, horseshoe crabs and tuatara are animals that have persisted for millions of years, said to have gone unchanged since the days of the dinosaurs. But even the most ancient-looking organisms show us that evolution is always at work.
Where to watch EonsEpisode 17
When Whales Walked
10m
We know whales as graceful giants bound to the sea. But what if we told you there was actually a time when whales could walk.
Where to watch EonsEpisode 18
An Illustrated History of Dinosaurs
10m
Our image of dinosaurs has been constantly changing since naturalists started studying them about 350 years ago. Taken together, these pictures can tell us a whole lot about just how much we have learned. Let's explore the history of dinosaur science as seen through the history of dinosaur art.
Where to watch EonsEpisode 19
A Brief History of Geologic Time
10m
By looking at the layers beneath our feet, geologists have been able to identify and describe crucial episodes in life’s history. These key events frame the chapters in the story of life on earth and the system we use to bind all these chapters together is the Geologic Time Scale.
Where to watch EonsEpisode 20
The Search for the Earliest Life
10m
More than 4 billion years ago, the crust of the Earth was still cooling and the oceans were only beginning to form. But in recent years, we’ve started to discover that, even in this hellish environment, life found a way.
Where to watch EonsEpisode 21
The Facts About Dinosaurs & Feathers
10m
Over the past 20 years, dinosaurs of all types and sizes have been found with some sort of fluff or even full-on plumage. These fuzzy discoveries have raised a whole batch of new questions so we're here to tell you everything we know about dinosaurs and feathers.
Where to watch EonsEpisode 22
The Last Time the Globe Warmed
10m
Imagine an enormous, lush rainforest teeming with life...in the Arctic. Well there was a time -- and not too long ago -- when the world warmed more than any human has ever seen. (So far)
Where to watch EonsEpisode 23
What Happened to the World's Greatest Ape?
10m
Probably twice the size of a modern gorilla, Gigantopithecus is the greatest great-ape that ever was. And for us fellow primates, there are some lessons to be learned in how it lived, and why it disappeared.
Where to watch EonsEpisode 24
When Giant Fungi Ruled
10mfinale
420 million years ago, a giant feasted on the dead, growing slowly into the largest living thing on land. It belonged to an unlikely group of pioneers that ultimately made life on land possible -- the fungi.
Where to watch EonsEpisode information updated Jul 26, 2026
Available now in United States
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More about Eons
Cast
Kallie MooreSelf
Blake de PastinoSelf
Michelle Barboza-RamirezSelf
Hank GreenSelfCredits
- Created by
- Hank Green
Production details
- Status
- Returning Series
- Series type
- Scripted
- Episodes
- 246
- Original language
- English
Networks & production
PBS Digital StudiosUnited States
YouTube
PBS Digital StudiosUnited States
Themes
cenozoicdinosaurfossilmesozoicpaleontologistpaleontologypaleozoic