We’re Running Out of Sand (and It’s a Huge Problem)
19:38
Is the World Really Running Out of Sand?
18:01
Who Killed the Colorado River?
17:00
How An Ancient Ocean Shaped US History
17:04
Pourquoi les maisons américaines sont nulles ?
9:50
Why The World Is Running Out Of Sand
11:13
The race to mine the bottom of the ocean
12:29
The Connection Between Organized Crime and...Sand?
13:30