35:29

Geology of Virginia 2014

48:46

A Tour of Earth's Ancient Supercontinents

1:03:25

Robert Loucks-Character of the Austin Chalk, Texas

50:00

Ancient Landscapes of the Colorado Plateau with Wayne Ranney

20:53

Continents Collide: The Appalachians and the Himalayas

2:29:36

The Best Relaxing Classical Music Ever By Mozart - Relaxation Meditation Reading Focus

43:43

Principles for Dealing with the Changing World Order by Ray Dalio

46:17

The Line Time Erased; Where Will It Be Drawn In The Future?