Birdwatch Note Rating
2024-01-19 14:17:32 UTC - HELPFUL
Rated by Participant: DD54FB4CD34825621082702EDD7EBB703BF2F65B19A06222944015006BC110AA
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Original Note:
"great ice ages started when we had more carbon dioxide in the atmosphere than now" during last 800 thousand year CO2 level was between 200-280ppm. Human activity increased from 280 do 420ppm within about 300 years. https://www.climate.gov/news-features/understanding-climate/climate-change-atmospheric-carbon-dioxide
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