What Was Earth Like 3 Billion Years Ago?
32:11
What Was The Earth Like 2 Billion Years Ago?
26:49
How Bad Was The Great Oxidation Event?
30:49
What is the Oldest Fossil on Earth?
21:51
What Was Earth Like 4 Billion Years Ago?
1:08:15
The Earliest Years Of Earth's 4.6 Billion Year History
35:01
What Would The Earth Be Like Without Photosynthesis?
1:02:10
What Was The First Fungus?
1:04:27