An overview of fractionation, Mara's survival, 'Grand Tack' theory, formation of Mercury, solidifying Earth, and theories surrounding Theia.
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World Without Photosynthesis
Older Than Life? Evolution of Viruses
4 Billion Years of Life: Tour of the Biosphere
2 Billion Years Ago: After The Great Flood
Before Pangaea
Exploring Earth's Prehistoric All Sea
1.8 to 0.8 Billion Years Ago: Earth's Lost Billion Years
Earth's Impossible Fossils
One Billion Years Ago: Is This Eden?
The Key to Life? Evolution of Fungi
Snowball Earth
The Ediacaran: Life's Failed Experiment?
How Far Back In Time Could You Have Survived On Earth?
