On the recordSeptember 12, 2017
We have now blown through 400, which humankind has never experienced; and projections are that we will crest above 500 parts per million.
Source
congress.govEditor's note · Context
Discussing the unprecedented levels of atmospheric carbon dioxide.
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Jun 5, 2026
Seems like a lot of nothing. I mean, the only one who had anything to say that seemed ‘unsettling’ was a woman who works for right-wing political operations.
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