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The Genes We Lost Along the Way

Our DNA holds thousands of dead genes and we’ve only just begun to unravel their stories. But one thing is already clear: we’re not just defined by the genes that we’ve gained over the course of our evolution, but also by the genes that we’ve lost along the way.
Season 3 Episode 36 Length 12:01 Premiere: 02/24/21

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Season 3 Episodes

Where Are All The Squid Fossils?
S3 E45 Length 07:21 Premiere Date 06/03/21

How Weasels Got Skinny
S3 E44 Length 09:01 Premiere Date 05/18/21

When Trees Took Over the World
S3 E43 Length 07:28 Premiere Date 05/12/21

How To Survive the Little Ice Age
S3 E42 Length 10:00 Premiere Date 04/20/21

When Crocs Thrived in the Seas
S3 E41 Length 09:08 Premiere Date 04/27/21

How Chilis Got Spicy (and Why We Love the Burn)
S3 E40 Length 09:32 Premiere Date 04/06/21

How Humans Became (Mostly) Right-Handed
S3 E39 Length 08:36 Premiere Date 03/24/21

How Worm Holes Ended Wormworld
S3 E38 Length 09:42 Premiere Date 03/18/21

Our Bizarre, Possibly Venomous, Relative
S3 E37 Length 08:11 Premiere Date 03/10/21

The Genes We Lost Along the Way
S3 E36 Length 12:01 Premiere Date 02/24/21

The Return of Giant Skin-Shell Sea Turtles
S3 E35 Length 06:53 Premiere Date 02/17/21

When We First Talked
S3 E34 Length 11:13 Premiere Date 02/11/21

The Pandemic That Lasted 15 Million Years
S3 E33 Length 09:20 Premiere Date 01/28/21

The Reign of the Hell Ants
S3 E32 Length 10:09 Premiere Date 01/21/21

The Bear-Sized Beaver That Couldn’t Build A Dam
S3 E31 Length 07:32 Premiere Date 01/13/21

The Triassic Reptile With "Two Faces"
S3 E30 Length 10:11 Premiere Date 12/22/20

When the Earth Suddenly Stopped Warming
S3 E29 Length 10:21 Premiere Date 12/17/20

When Lizards Took Over the World
S3 E28 Length 08:29 Premiere Date 12/09/20

How Humans Lost Their Fur
S3 E27 Length 11:27 Premiere Date 12/02/20

The Rise and Fall of the Tallest Mammal to Walk the Earth
S3 E26 Length 07:53 Premiere Date 11/17/20

How Plankton Created A Bizarre Giant of the Seas
S3 E25 Length 08:48 Premiere Date 11/10/20

Why Do Things Keep Evolving Into Crabs?
S3 E24 Length 06:46 Premiere Date 10/28/20

How Ankylosaurs Got Their Clubs
S3 E23 Length 07:52 Premiere Date 10/13/20

How Plants Became Carnivores
S3 E22 Length 09:48 Premiere Date 10/07/20

What Happened To Primates In North America?
S3 E21 Length 08:54 Premiere Date 09/30/20

Why Did These Ancient Gophers Have Horns?
S3 E20 Length 08:23 Premiere Date 09/15/20

The Sea Monster from the Andes
S3 E19 Length 06:27 Premiere Date 09/10/20

How Ancient Art Captured Australian Megafauna
S3 E18 Length 09:43 Premiere Date 09/02/20

The Oddest Couple in the Fossil Record
S3 E17 Length 08:48 Premiere Date 08/20/20

How We Figured Out Fermentation
S3 E16 Length 09:20 Premiere Date 08/13/20

The Dinosaur Who Was Buried at Sea
S3 E15 Length 12:11 Premiere Date 08/05/20

The Biggest Frog that Ever Lived
S3 E14 Length 07:05 Premiere Date 07/23/20

The Story of the Dino Stampede
S3 E13 Length 10:43 Premiere Date 07/16/20

How the Walrus Got Its Tusks
S3 E12 Length 07:42 Premiere Date 07/29/20

When Dinosaurs Chilled in the Arctic
S3 E11 Length 09:20 Premiere Date 07/29/20

The World Before Plate Tectonics
S3 E10 Length 09:24 Premiere Date 07/29/20

When Dinosaur Look-Alikes Ruled the Earth
S3 E9 Length 07:23 Premiere Date 07/29/20

How We Identified One of Earth’s Earliest Animals
S3 E8 Length 10:44 Premiere Date 07/29/20

The Two Viruses That We’ve Had For Millions of Years
S3 E7 Length 09:11 Premiere Date 05/28/20

How Plants Caused the First Mass Extinction
S3 E6 Length 09:31 Premiere Date 05/28/20

How the Andes Mountains Might Have Killed a Bunch of Whales
S3 E5 Length 08:27 Premiere Date 05/07/20

The Risky Paleo Diets of Our Ancestors
S3 E4 Length 07:59 Premiere Date 05/07/20

When a Billion Years Disappeared
S3 E3 Length 11:09 Premiere Date 05/07/20

How Dogs (Eventually) Became Our Best Friends
S3 E2 Length 09:21 Premiere Date 04/09/20

How the Egg Came First
S3 E1 Length 08:44 Premiere Date 04/09/20

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