This is something i didn't understand before:

Methane, which comes from cows, is worse than CO2 as an planet warmer, but breaks down naturally in the atmosphere at a faster rate than CO2.

The bad news is that the amount of methane is climbing suggesting the break-down reaction is getting slower - possibly due to a 'tipping point' reached whereby the heat level is negatively impacting the chemical reaction in the atmosphere that causes the break-down.

Another pointer to us being about to enter hyper-drive?

https://www.theguardian.com/environment/2019/feb/17/methane-levels-sharp-rise-threaten-...