(Also without searching first) Methane is something like 50 times more effective as a greenhouse gas. That's after allowing for the fact it dissipates far more

(Also without searching first) Methane is something like 50 times more effective as a greenhouse gas. That's after allowing for the fact it dissipates far more quickly, initially it's even more. So even though it's a small part of emissions it's a significant constituent of climate change.