The Origins Podcast with Lawrence Krauss cover image

Andy Knoll: The First Four Billion Years of Life on Earth

The Origins Podcast with Lawrence Krauss

00:00

The Great Oxygennation Event

Two point four billion is called the great oxygennation event. As oxygen started to accumulate in the atmosphere and surface ocean, inventories of things like sulphate and nitrate also increased. So you just have this broadening of the metabolic possibilities for bacteria. Although i now learnd it wasn't so great. It was an ok, oxygen eventthat's exactly right. And it gives you confidence. Efectis there's four, five, and they all give the same answer when she sad.

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