We have CO2 measurements going back to 1960 https://en.wikipedia.org/wiki/Keeling_Curve https://en.wikipedia.org/wiki/Keeling_Curve Just going back to the CO2

We have CO2 measurements going back to 1960 https://en.wikipedia.org/wiki/Keeling_Curve https://en.wikipedia.org/wiki/Keeling_Curve Just going back to the CO2 level of 15 years ago " would be equivalent to the stone in 165,000 Empire State buildings or 66,000 Great Pyramids of Giza...a cost of $28 trillion for the United States, about $90,000 per individual" so there's no chance we'll accidentally remove too much! Source: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0081648#s6 https://journals.plos.org/plosone/article?id=10.1371/journal...