The Iceman Goeth, Part Three: Extinction and Mass Extinction Events From 3.5 Billion to 66 Million Years Ago

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Latest Peer-Reviewed Journal Article:

Guy R. McPherson, Beril Kallfelz-Sirmacek, James Massa, William Kallfelz, and Ricardo Vinuesa, June 2023, Results in Engineering: “Environmental thresholds for mass-extinction events.”