Onset of The Modern Ice Age & Its Effects on Life | GEO GIRL
17:06
Do All Mass Extinction Events have a Common Cause? | GEO GIRL
16:41
Ordovician Mass Extinction- Causes & Consequences | GEO GIRL
22:02
Where Did Earth's Water Come From? & How Do We Know? GEO GIRL
20:57
Geology of the Carboniferous and Permian ~360-252 Million Years Ago | GEO GIRL
27:51
The "Boring Billion"- What Really Happened 1.8 to 0.8 Billion Years Ago? GEO GIRL
18:01
What is Clay & Where / How Clay Forms | GEO GIRL
13:44
What Causes an Ice Age?
24:12