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[–] 22115701? ago  (edited ago)

I can't find any actual data on CO2 released by Pinatubo. Only people arguing whether the "more than humanity" claim is true or false. But according to wikipedia it was 10 gigatons of magma, 20 megatons of SO2, and various metals in the hundreds of kilotons. So unless there was more CO2 than everything else combined, then it's probably pretty insignificant compared to 30 gigatons per year from humans.