When The Earth Was Purple 1 Season 15 Episode

Episode #1

The Trouble With Trilobites

Episode #2

When Did the First Flower Bloom?

Episode #3

The Tully Monster & Other Problematic Creatures

Episode #4

Stegosaurs: Tiny Brains & Thagomizers

Episode #5

What Colors Were Dinosaurs?

Episode #6

The Story of Saberteeth

Episode #7

That Time Oxygen Almost Killed Everything

Episode #8

The Biggest Thing That Ever Flew

Episode #9

Dimetrodon: Our Most Unlikely Ancestor

Episode #10

The Extinction That Never Happened

Episode #11

The Strange Case of the Buzzsaw Jaws

Episode #12

The Age of Giant Insects

Episode #13

History's Most Powerful Plants

Episode #14

How Did Dinosaurs Get So Huge?

Episode #15

When The Earth Was Purple

Episode #16

'Living Fossils' Aren't Really a Thing

Episode #17

When Whales Walked

Episode #18

An Illustrated History of Dinosaurs

Episode #19

A Brief History of Geologic Time

Episode #20

The Search for the Earliest Life

Episode #21

The Facts About Dinosaurs & Feathers

Episode #22

The Last Time the Globe Warmed

Episode #23

What Happened to the World's Greatest Ape?

Episode #24

When Giant Fungi Ruled