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Methane stays only 12 years in the atmosphere versus CO2 which stays 300 to 1,000 years.



Over those 12 years, methane "decays" to CO2 and water vapor, both greenhouse gases in their own right. And before it decays, it has a much stronger warming effect than either. So a ton of methane is strictly worse than a ton of CO2 in absolutely every way.


Sure but in those 12 years it does an incredible amount of damage(and then it decays into CO2 anyway). Methane is a huge problem.


However, it has 28x the global warming potential of CO2.


Methane breaks down into CO2.




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