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Atmospheric CO2 reached 415.26 ppm on the Keeling Curve, the highest level since modern humans evolved. Measured each day since 1958, the curve is now so steep it no longer looks like a curve.
Atmospheric CO2 reached 415.26 ppm on the Keeling Curve, the highest level since modern humans evolved. Measured each day since 1958, the curve is now so steep it no longer looks like a curve.
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