https://scitechdaily.com/rewinding-earths-climate-clock-a-deep-dive-into-66-million-years-of-co2-data/
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1/7/24 at 3:47pm
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Carbon dioxide has not been as high as today's concentrations in 14 million years thanks to fossil fuel emissions now warming the planet. Today atmospheric carbon dioxide is at its highest level in at least several million years thanks to widespread combustio…
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