That Time North America Tried to Tear Itself Apart

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Looking at a map, you would never know that North America once almost ripped itself in half. But 1.1 billion years ago, it tried to - and had it succeeded, there would now be an ocean where Lake Superior is!

Hosted by: Hank Green

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Sources:
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Image Sources:
https://commons.wikimedia.org/wiki/File:Pannotia.svg
https://commons.wikimedia.org/wiki/File:Laurussia_Euramerica.svg
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https://commons.wikimedia.org/wiki/File:Ocean-birth_hg.png
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https://commons.wikimedia.org/wiki/File:Grenville-Extent.png
https://commons.wikimedia.org/wiki/File:EAfrica.png
https://pubs.usgs.gov/gip/dynamic/historical.html

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