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How the Earth Was Made S1E7 — Great Lakes
8.6

Great Lakes

8.6/10 · 39 votesMar 24, 200945 min

Ranked #2 of 13 in Season 1•+0.3 vs season avg

Discussion

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.

Seasons2

Season 1 Episodes13

Cast1

Corey Johnson

Corey Johnson

Self - Narrator (voice)

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Episode Summary

"Great Lakes" is episode 7 of How the Earth Was Made season 1. It scored 8.6/10 from 39 votes, ranking #2 of 13 episodes this season (season average 8.3). It aired on March 24, 2009.