The Permian-Triassic Boundary - The Rocks of Utah
23:35
Pennsylvanian Paradox Formation - The Rocks of Utah
19:08
Permian-Triassic Extinction Event - The Great Dying
26:31
Triassic Chinle Formation - The Rocks of Utah
33:51
The Day the Mesozoic Died: The Asteroid That Killed the Dinosaurs — HHMI BioInteractive Video
5:27
A Sad Moment in American History
53:08
Where is the Flood - Post-Flood Boundary? - Dr. Steve Austin (Conf Lecture)
52:00
La résilience et l’intelligence des champignons
28:50