Rising methane could be a sign that Earth's climate is part-way through a 'termination-level transition'

Methane emissions threaten humanity’s ability to limit warming to relatively safe levels

Do they fuck, we could geoengineer cooling very easily. We need to know more before we do, but injecting aerosols into the stratosphere isn't technically difficult.

https://www.scientificamerican.com/article/old-bomber-plane-will-sniff-the-sky-for-geoengineering-particles/

if you want to make your own comparisons: https://ourworldindata.org/grapher/per-capita-methane-emissions?tab=chart&time=latest&country=CHN~USA~GBR~OWID_WRL~IND~ISR~ITA~KGZ~KAZ~JPN~AUS~CAN~UKR~ARE~VEN~VNM~KWT~IRQ~IRN~IDN~HKG~DEU~FRA~FIN~DNK~CUB~BOL~BRA~BGD~ARG~MYS~MEX~NZL~PRK~NOR~PAK~PHL~RUS~SAU~ZAF~KOR~SWE~TWN~THA~TUR