When Sharks Swam the Great Plains
10:07
When Crocs Thrived in the Seas
14:36
The History of Climate Cycles (and the Woolly Rhino) Explained
15:20
Rekindle Primal Knowledge - How to Teach Yourself Wilderness Survival
15:53
What Actual Aliens Might Look Like
11:13
Why Megalodon (Definitely) Went Extinct
21:54
Geothermal Energy is Changing
18:01
Who Killed the Colorado River?
24:52