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What if we told you that there was a time when oxygen almost wiped out all life on Earth? 3 billion years ago, when the world was a place you’d never recognize, too much of a good thing almost ruined everything for everybody.

This episode on the Oxygen Catastrophe is supported by Squarespace. If you visit squarespace.com and use offer code “eons”, you’ll get 10% off your first purchase.

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References:

Early Earth ‘was covered in water’

http://www.amnh.org/explore/science-bulletins/earth/documentaries/the-rise-of-oxygen/article-earth-without-oxygen/
https://origins.asu.edu/blog/oxygenation-catastrophe
http://advances.sciencemag.org/content/2/5/e1600134
http://www.livescience.com/1398-early-earth-purple-study-suggests.html
http://www.bbc.com/news/science-environment-39117523
https://www.sciencedaily.com/releases/2013/01/130117084856.htm
https://link.springer.com/referenceworkentry/10.1007%2F978-3-642-11274-4_1714
https://www.sciencedaily.com/releases/2017/01/170131080007.htm
http://www.amnh.org/exhibitions/permanent-exhibitions/rose-center-for-earth-and-space/david-s.-and-ruth-l.-gottesman-hall-of-planet-earth/how-has-the-earth-evolved/banded-iron-formation