Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Fossils & Paleontology, Gaia - Planetary Perspectives, Origin & Evolution of Life, Press Release Rock Record Illuminates Earth’s Oxygen History by Keith CowingMay 30, 2025May 29, 2025 Several key moments in Earth’s history help us humans answer the question, “How did we get here?”