41:48

Earth's Future

1:22:29

The Cretaceous Period

1:10:45

The Paleogene Period

43:35

The Permian Period

1:12:53

The Hadean Eon

52:19

The Silurian & Devonian Periods

31:22

The Pennsylvanian Period

45:53

How Snowball Earth Leveled Mountains and Created the Great Unconformity