Great Lakes
March 24, 2009
45 min
Season 1 - Episode 7: Great Lakes
00:00 / 45:00
Overview
Scientists seek clues to the formation of North America's Great Lakes, the largest expanse of fresh water on the planet; delving into an underground salt mine; investigating a fossilized coral reef; diving to the bottom of Lake Superior.
Episode Information
TV Show
How the Earth Was Made
Season
Season 1
Episode Number
7
Air Date
March 24, 2009
Runtime
45 minutes