← York U job: head of science library / physical sciences librarian Unconventional Perogies → Close to 410 ppm 21 April 2017 climate.change Atmospheric CO₂ is almost at 410 ppm, as measured at Mauna Loa and seen on GHG.EARTH. 409.82 ppm. ← York U job: head of science library / physical sciences librarian Unconventional Perogies →
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