Methane is responsible for about 30% of the current global warming, so it clearly is a priority. That said: Methane is transient, while CO2 accumulates. Methan

Methane is responsible for about 30% of the current global warming, so it clearly is a priority. That said: Methane is transient, while CO2 accumulates. Methane decays quite quickly into CO2, which is why when accounted for over 20 years methane is considered 86x more potent than CO2, and over one century "only" 28x as potent. Any CO2 emitted today we will have to deal with for centuries to come. That's not the case for methane. So while lowering methane will yield the most benefits in the short term, thinking longer term, it's really CO2 emissions that need to be lowered urgently. Said differently, using a very crude reasoning with a hypothetical scenario: cutting methane emissions in 2025 rather than in 2050 would have little to no effect on the climate of 2100. In both cases the methane will have mostly decayed, and thus will stop capturing heat from the sun (maybe 2100 is a bit early, but you get the idea). But cutting CO2 emissions in 2025 rather than 2050 would have a dramatic effect on the climate of 2100, as these 25 years of CO2 emissions would mostly remain right there in the atmosphere. It's obviously over-simplified, as global warming is having irreversible effects right now, and methane decaying will not revive species gone extinct in the meantime. So I'm certainly not arguing that we should not do anything against methane emissions. But that should not be done at the expense of fighting against CO2 emissions, rather on top of it...