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#733 Andrew Knoll - A Brief History of Earth: Four Billion Years in Eight Chapters

The Dissenter

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Are We Sure About the Conditions That Had to Be Set in Place for Life to Emerge on Earth?

There has been 70 or 80 years of experimentation by people who are interested in this question. It's pretty clear that the basic building blocks of proteins, nucleic acids, membranes can form spontaneously. The fact from geology that the early Earth didn't have any oxygen gas is consistent with what chemists tell us you need for life.

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