19:33

Patterns in Evolution - Part 1

24:24

Correlation - Part 2

27:26

This open problem taught me what topology is

25:11

Precambrian Formation of North America - Part 1

26:05

Interpreting Geologic Maps - Part 1

19:52

Inside the V3 Nazi Super Gun

37:42

Faunal Succession and Depositional Sequences - Part 1

25:26

Patterns in Evolution - Part 2