The factor of 25 accounts for this - over a 100-year timespan, methane is 25x worse than the equivalent weight of CO2. Over a shorter 20-year timespan, it is 8

The factor of 25 accounts for this - over a 100-year timespan, methane is 25x worse than the equivalent weight of CO2. Over a shorter 20-year timespan, it is 86x worse. https://en.wikipedia.org/wiki/Global-warming_potential#Values https://en.wikipedia.org/wiki/Global-warming_potential#Value...