How did Earth get its coastlines? Neil deGrasse Tyson and comedian Chuck Nice explore prehistoric coastlines, the Ice Age, and why Florida is temporary. Why does the shape of the coastline change?

Learn about the continental shelf and how the Ice Age impacted the oceans. What did Earth’s coastlines look like during the Ice Age? Find out about the Bering Strait Land Bridge and how early humans may have used it to cross into the Americas. We discuss how civilization grew in stable climate and how that will change over time.

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Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!

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00:00 - Introduction: Coastlines
00:25 - What Do Coastlines Change?
1:43 - What is the Ice Age?
2:55 - The Bering Land Bridge
5:05 - Human Civilization v. The Climate
9:35 - Closing: Redrawing the Map