Watch Trailer
DISCLAIMER: Not all titles shown are currently available on all streaming providers.

Watch How the Earth Was Made Season 1 Episode 7 Online

  • 9/10
  • Subtitles: English

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.