1. How Did The Earth Form?
May 9, 2020
An overview of fractionation, Mara's survival, 'Grand Tack' theory, formation of Mercury, solidifying Earth, and theories surrounding Theia.
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18 min
2. What Was Earth Like 4 Billion Years Ago?
May 23, 2020
No overview available.
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22 min
3. The Mystery of the Late Heavy Bombardment
Jun 7, 2020
No overview available.
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20 min
4. Where Did Earth's Water Come From?
Jun 14, 2020
No overview available.
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32 min
5. How Did Life Begin?
Jul 4, 2020
No overview available.
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22 min
6. What Was The Last Common Ancestor of all Life on Earth?
Jul 11, 2020
No overview available.
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24 min
7. Were Volcanoes The Key To Life?
Jul 18, 2020
No overview available.
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21 min
8. Did Life on Earth Come From Space?
Aug 8, 2020
No overview available.
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17 min
9. What Would The Earth Have Been Like Without Life?
Sep 2, 2020
No overview available.
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21 min
10. What is the Oldest Fossil on Earth?
Sep 25, 2020
No overview available.
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31 min
11. How The Earth Got Its Magnetic Field (And Why It Might Not Protect Us Much Longer)
Oct 11, 2020
No overview available.
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23 min
12. What Was Earth Like 3 Billion Years Ago?
Nov 22, 2020
No overview available.
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27 min
13. How Bad Was The Great Oxidation Event?
Dec 20, 2020
No overview available.
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27 min
14. How Did Life Recover From The First Mass Extinction?
Jan 6, 2021
No overview available.
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28 min
15. What Would The Earth Be Like Without Photosynthesis?
Jan 31, 2021
World Without Photosynthesis
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35 min
16. What Was The First Virus?
Feb 24, 2021
Older Than Life? Evolution of Viruses
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27 min
17. What Is The Other 99.99% Of Life?
Apr 8, 2021
4 Billion Years of Life: Tour of the Biosphere
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32 min
18. What Was The Earth Like 2 Billion Years Ago?
May 16, 2021
2 Billion Years Ago: After The Great Flood
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32 min
19. A Tour of Earth's Ancient Supercontinents
Jun 26, 2021
Before Pangaea
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49 min
20. A Tour of Earth's Ancient Superoceans
Jul 31, 2021
Exploring Earth's Prehistoric All Sea
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43 min
21. What Was The "Boring Billion" Really Like?
Oct 17, 2021
1.8 to 0.8 Billion Years Ago: Earth's Lost Billion Years
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36 min
22. What Was The First Complex Life on Earth?
Nov 30, 2021
Earth's Impossible Fossils
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60 min
23. What Was The Earth Like 1 Billion Years Ago?
Feb 18, 2022
One Billion Years Ago: Is This Eden?
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43 min
24. What Was The First Fungus?
May 30, 2022
The Key to Life? Evolution of Fungi
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62 min
25. Why Did The Earth Totally Freeze For 100 Million Years?
Aug 31, 2022
Snowball Earth
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49 min
26. Were These The First Animals?
Dec 14, 2022
The Ediacaran: Life's Failed Experiment?
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54 min
27. How Far Back In Time Could You Have Survived On Earth?
Jun 9, 2023
How Far Back In Time Could You Have Survived On Earth?
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57 min