America's Ice Age

Introduction to How the Earth Was Made: America's Ice Age (1:12)

Louis Agassiz's Theory Proved (2:00)

Records of Past Climates (1:36)

Beginning of the Ice Age (1:34)

Erratic Rocks (2:18)

Moraine Hills (2:40)

Striations and Stone Pavements (1:48)

Ice Rearranges the Landscape (2:33)

Niagara Falls (1:53)

Ice Cores (3:26)

Thickness of Ice Sheet (3:31)

Changes to the Shape of the Planet (1:09)

Changing Coastlines (2:04)

Trapped Water (2:25)

Altering the Course of Human History (2:10)

Land Bridge Between North America and Siberia (2:47)

Reduction of Species (2:29)

Results of the Ice Ages (2:53)

Melting Ice (2:17)

Conclusion and Credits: America's Ice Age (1:30)