Eons
The Evolution of the Heart (A Love Story) (S03E05)
To grasp the origins of hearts, we must journey back to the earliest shared ancestor of all creatures with a heart. This process spanned hundreds o...
S03E05
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Season 3 Episodes
S03E02 - How Blood Evolved (Many Times)
Eons
S03E03 - The Humans That Lived Before Us
Eons
S03E04 - The Island of Shrinking Mammoths
Eons
S03E05 - The Evolution of the Heart (A Love Story)
Eons
S03E06 - How 7,000 Years of Epic Floods Changed the World
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S03E07 - The Island of Huge Hamsters and Giant Owls
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S03E08 - The Giant Bird That Got Lost in Time
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S03E09 - When We First Made Tools
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S03E10 - When Giant Scorpions Swarmed the Seas
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S03E11 - When We Tamed Fire
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S03E12 - The Mystery Behind the Biggest Bears of All Time
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S03E13 - The Croc That Ran on Hooves
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S03E14 - When We Took Over the World
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S03E15 - The Ghostly Origins of the Big Cats
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S03E16 - The History of Climate Cycles (and the Woolly Rhino) Explained
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S03E17 - The Hellacious Lives of the "Hell Pigs"
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S03E18 - How Evolution Works (And How We Figured It Out)
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S03E19 - When the Synapsids Struck Back
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S03E20 - When Ichthyosaurs Led a Revolution in the Seas
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S03E21 - When We Met Other Human Species
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S03E22 - How Volcanoes Froze the Earth (Twice)
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S03E23 - How Earth's First, Unkillable Animals Saved the World
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S03E24 - When Giant Deer Roamed Eurasia
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S03E25 - Was This Dinosaur a Cannibal?
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S03E26 - The Missing Link That Wasn’t
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S03E27 - The Raptor That Made Us Rethink Dinosaurs
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S03E28 - When Bats Took Flight
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S03E29 - How Pterosaurs Got Their Wings
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S03E30 - When Giant Lemurs Ruled Madagascar
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S03E31 - When Antarctica Was Green
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S03E32 - The Case of the Dinosaur Egg Thief
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S03E33 - When Hobbits Were Real
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S03E34 - Were These Monsters Inspired by Fossils?
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S03E35 - How We Domesticated Cats (Twice)
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S03E36 - When Giant Hypercarnivores Prowled Africa
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S03E37 - Why Male Mammoths Lost the Game
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S03E38 - The Forgotten Story of the Beardogs
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