...and then decomposes into CO2 anyway. So you get a short-lived (10 years) very potent greenhouse gas, and then the long-term effect of CO2 on top of that. So

...and then decomposes into CO2 anyway. So you get a short-lived (10 years) very potent greenhouse gas, and then the long-term effect of CO2 on top of that. So whichever way you slice it, releasing methane is strictly worse than releasing CO2.