E01 · How Did The Earth Form? 18m
5/9/2020
An overview of fractionation, Mara's survival, 'Grand Tack' theory, formation of Mercury, solidifying Earth, and theories surrounding Theia.
E02 · What Was Earth Like 4 Billion Years Ago? 22m
5/23/2020
E03 · The Mystery of the Late Heavy Bombardment 20m
6/7/2020
E04 · Where Did Earth's Water Come From? 32m
6/14/2020
E05 · How Did Life Begin? 22m
7/4/2020
E06 · What Was The Last Common Ancestor of all Life on Earth? 24m
7/11/2020
E07 · Were Volcanoes The Key To Life? 21m
7/18/2020
E08 · Did Life on Earth Come From Space? 17m
8/8/2020
E09 · What Would The Earth Have Been Like Without Life? 21m
9/2/2020
E10 · What is the Oldest Fossil on Earth? 31m
9/25/2020
E11 · How The Earth Got Its Magnetic Field (And Why It Might Not Protect Us Much Longer) 23m
10/11/2020
E12 · What Was Earth Like 3 Billion Years Ago? 27m
11/22/2020
E13 · How Bad Was The Great Oxidation Event? 27m
12/20/2020
E14 · How Did Life Recover From The First Mass Extinction? 28m
1/6/2021
E15 · What Would The Earth Be Like Without Photosynthesis? 35m
1/31/2021
World Without Photosynthesis
E16 · What Was The First Virus? 27m
2/24/2021
Older Than Life? Evolution of Viruses
E17 · What Is The Other 99.99% Of Life? 32m
4/8/2021
4 Billion Years of Life: Tour of the Biosphere
E18 · What Was The Earth Like 2 Billion Years Ago? 32m
5/16/2021
2 Billion Years Ago: After The Great Flood
E19 · A Tour of Earth's Ancient Supercontinents 49m
6/26/2021
Before Pangaea
E20 · A Tour of Earth's Ancient Superoceans 43m
7/31/2021
Exploring Earth's Prehistoric All Sea
E21 · What Was The "Boring Billion" Really Like? 36m
10/17/2021
1.8 to 0.8 Billion Years Ago: Earth's Lost Billion Years
E22 · What Was The First Complex Life on Earth? 1h
11/30/2021
Earth's Impossible Fossils
E23 · What Was The Earth Like 1 Billion Years Ago? 43m
2/18/2022
One Billion Years Ago: Is This Eden?
E24 · What Was The First Fungus? 1h 2m
5/30/2022
The Key to Life? Evolution of Fungi
E25 · Why Did The Earth Totally Freeze For 100 Million Years? 49m
8/31/2022
Snowball Earth
E26 · Were These The First Animals? 54m
12/14/2022
The Ediacaran: Life's Failed Experiment?
E27 · How Far Back In Time Could You Have Survived On Earth? 57m
6/9/2023
How Far Back In Time Could You Have Survived On Earth?
