Eons
How the Egg Came First (S04E10)
The journey of the egg stretches back millions of years, tracing the evolution from the earliest vertebrates that took their first steps onto land ...
S04E10
Show
Season 4 Episodes
S04E02 - The Neanderthals That Taught Us About Humanity
Eons
S04E03 - The Giant Dinosaur That Was Missing a Body
Eons
S04E04 - How South America Made the Marsupials
Eons
S04E05 - A Short Tale About Diplodocus' Long Neck
Eons
S04E06 - When the Rainforests Collapsed
Eons
S04E07 - How a Hot Planet Created the World's Biggest Snake
Eons
S04E08 - When the Sahara Was Green
Eons
S04E09 - When Penguins Went From The Sky To The Sea
Eons
S04E10 - How the Egg Came First
Eons
S04E11 - How Dogs (Eventually) Became Our Best Friends
Eons
S04E12 - When a Billion Years Disappeared
Eons
S04E13 - The Risky Paleo Diets of Our Ancestors
Eons
S04E14 - How the Andes Mountains Might Have Killed a Bunch of Whales
Eons
S04E15 - How Plants Caused the First Mass Extinction
Eons
S04E16 - The Two Viruses That We’ve Had For Millions of Years
Eons
S04E17 - How We Identified One of Earth’s Earliest Animals
Eons
S04E18 - When Dinosaur Look-Alikes Ruled the Earth
Eons
S04E19 - The World Before Plate Tectonics
Eons
S04E20 - When Dinosaurs Chilled in the Arctic
Eons
S04E21 - How the Walrus Got Its Tusks
Eons
S04E22 - The Story of the Dino Stampede
Eons
S04E23 - The Biggest Frog that Ever Lived
Eons
S04E24 - The Dinosaur Who Was Buried at Sea
Eons
S04E25 - How We Figured Out Fermentation
Eons
S04E26 - The Oddest Couple in the Fossil Record
Eons
S04E27 - How Ancient Art Captured Australian Megafauna
Eons
S04E28 - The Sea Monster from the Andes
Eons
S04E29 - When Rodents Had Horns
Eons
S04E30 - The First and Last North American Primates
Eons
S04E31 - How Plants Became Carnivores
Eons
S04E32 - How Ankylosaurs Got Their Clubs
Eons
S04E33 - Why Do Things Keep Evolving Into Crabs?
Eons
S04E34 - How Plankton Created A Bizarre Giant of the Seas
Eons
S04E35 - The Rise and Fall of the Tallest Mammal to Walk the Earth
Eons
S04E36 - How Humans Lost Their Fur
Eons
S04E37 - When Lizards Took Over the World
Eons
S04E38 - When the Earth Suddenly Stopped Warming
Eons