43:36

How Geologists Discovered and Mapped a Great Seaway

7:34

The Story Behind This Giant Rock in the Middle of a Field

18:34

Catastrophe and Cartography - Ice Age Floods Visualized

10:11

Devils Tower: A Volcanic Neck or Not?

14:08

When a B-17 Tail Fell With a Gunner Inside

6:35

How Ice Ages Happen: The Milankovitch Cycles

51:23

Mezopotamya - Sümerler

4:56

The World's Most Valuable Volcanoes; Carbonatite Forming Eruptions