Birdwatch Note Rating
2025-01-27 17:35:29 UTC - HELPFUL
Rated by Participant: AA5D81AB9576DD1BE37FFDC375F33C8E1BFFD59022966C961CBEC00037EAE00D
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Original Note:
NNN Carbon levels in the past 66 million years were between 270 and 1600ppm. They were lower than today in the more recent history though. https://news.climate.columbia.edu/2023/12/07/a-new-66-million-year-history-of-carbon-dioxide-offers-little-comfort-for-today/ https://today.tamu.edu/2021/06/14/ancient-deepsea-shells-reveal-66-million-years-of-carbon-dioxide-levels/ https://earth.org/data_visualization/a-brief-history-of-co2/
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