This doesn't make sense. More nitrous oxide and methane means more heat is captured by the atmosphere. This effect does not diminish with "the amount already in

This doesn't make sense. More nitrous oxide and methane means more heat is captured by the atmosphere. This effect does not diminish with "the amount already in the atmosphere." https://www3.epa.gov/climatechange/ghgemissions/gases/n2o.html https://www3.epa.gov/climatechange/ghgemissions/gases/n2o.ht...