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The original was posted on /r/science by /u/sciencealert on 2025-04-03 18:15:23+00:00.

Original Title: The Great Oxidation Event (GOE) some 2.4 billion years ago established the oxygen-rich atmosphere that many living things depend on today. Curiously, when it came to evolving ways to actively use the element for respiration, some strains of bacteria had a head start.