Season 1

    Video thumbnail: Eons How the Squid Lost Its Shell

    Eons

    How the Squid Lost Its Shell

    Ancestors of cephalopods all had shells until it proved to be their biggest weakness.

    How the Squid Lost Its Shell

    Video thumbnail: Eons What Was the Ancestor of Everything?

    Eons

    What Was the Ancestor of Everything?

    The search for our origins go back to a single common ancestor.

    What Was the Ancestor of Everything?

    Video thumbnail: Eons Inside the Dinosaur Library

    Eons

    Inside the Dinosaur Library

    We talk to Amy Atwater, Collections Manager at the Museum of the Rockies.

    Inside the Dinosaur Library

    Video thumbnail: Eons The Most Useful Fossils In The World

    Eons

    The Most Useful Fossils In The World

    Mysterious fossils can be used to tell time in the deep past.

    The Most Useful Fossils In The World

    Video thumbnail: Eons What a Dinosaur Looks Like Under a Microscope

    Eons

    What a Dinosaur Looks Like Under a Microscope

    What has been observed and learned from putting dinosaur bones under a microscope.

    What a Dinosaur Looks Like Under a Microscope

    Video thumbnail: Eons How the Turtle Got Its Shell

    Eons

    How the Turtle Got Its Shell

    Where did turtles come from? And how did the they get their shells?

    How the Turtle Got Its Shell

    Video thumbnail: Eons The Other Explosion You Should Know About

    Eons

    The Other Explosion You Should Know About

    The Sudden burst of diversity that marked the dawn of truly complex life on our planet.

    The Other Explosion You Should Know About

    Video thumbnail: Eons How Sex Became A Thing

    Eons

    How Sex Became A Thing

    Follow the early history of how (and why) sex became a thing.

    How Sex Became A Thing

    Video thumbnail: Eons From the Cambrian Explosion to the Great Dying

    Eons

    From the Cambrian Explosion to the Great Dying

    The Paleozoic Era is one of the most chaotic times in Earth's history. Find out why!

    From the Cambrian Explosion to the Great Dying

    Video thumbnail: Eons The Whole Saga of the Supercontinents

    Eons

    The Whole Saga of the Supercontinents

    So if we want to know how we got here, we have to understand how "here" got here.

    The Whole Saga of the Supercontinents

    Video thumbnail: Eons The Great Snake Debate

    Eons

    The Great Snake Debate

    90 million years ago, an ancient snake known as Najash had...legs.

    The Great Snake Debate

    Video thumbnail: Eons Untangling the Devil's Corkscrew

    Eons

    Untangling the Devil's Corkscrew

    In the late 1800s, paleontologists in Nebraska found huge coils of hardened sand.

    Untangling the Devil's Corkscrew

    Video thumbnail: Eons The Time Terror Birds Invaded

    Eons

    The Time Terror Birds Invaded

    5 million years ago, a predator made its way onto the coastal plains of North America.

    The Time Terror Birds Invaded

    Video thumbnail: Eons How Two Microbes Changed History

    Eons

    How Two Microbes Changed History

    More than two billion years ago, a tiny living thing started to live inside another thing.

    How Two Microbes Changed History

    Video thumbnail: Eons When Giant Fungi Ruled

    Eons

    When Giant Fungi Ruled

    An unlikely group of pioneers ultimately made life on land possible -- the fungi.

    When Giant Fungi Ruled

    Video thumbnail: Eons What Happened to the World's Greatest Ape?

    Eons

    What Happened to the World's Greatest Ape?

    Gigantopithecus is the greatest great-ape that ever was.

    What Happened to the World's Greatest Ape?

    Video thumbnail: Eons The Last Time the Globe Warmed

    Eons

    The Last Time the Globe Warmed

    Imagine an enormous, lush rainforest teeming with life...in the Arctic.

    The Last Time the Globe Warmed

    Video thumbnail: Eons The Facts About Dinosaurs & Feathers

    Eons

    The Facts About Dinosaurs & Feathers

    Dinosaurs have been found with some sort of fluff or even full-on plumage.

    The Facts About Dinosaurs & Feathers

    Video thumbnail: Eons The Search for the Earliest Life

    Eons

    The Search for the Earliest Life

    Even in a hellish environment, life found a way.

    The Search for the Earliest Life

    Video thumbnail: Eons A Brief History of Geologic Time

    Eons

    A Brief History of Geologic Time

    Geologists have been able to identify crucial episodes in life’s history.

    A Brief History of Geologic Time

    Video thumbnail: Eons An Illustrated History of Dinosaurs

    Eons

    An Illustrated History of Dinosaurs

    Our image of dinosaurs has been constantly changing since naturalists started studying the

    An Illustrated History of Dinosaurs

    Video thumbnail: Eons When Whales Walked

    Eons

    When Whales Walked

    We know whales as graceful giants bound to the sea.

    When Whales Walked

    Video thumbnail: Eons Living Fossils' Aren't Really a Thing

    Eons

    Living Fossils' Aren't Really a Thing

    Even the most ancient-looking organisms show us that evolution is always at work.

    Living Fossils' Aren't Really a Thing

    Video thumbnail: Eons When The Earth Was Purple

    Eons

    When The Earth Was Purple

    But imagine a time when the Earth looked a little … purple.

    When The Earth Was Purple