Irreversible warming tipping point may have been triggered: Arctic mission chief
straitstimes.com
straitstimes.com
Meaning: Eliminate all human activity today and atmospheric carbon would continue to increase, the earth warming will continue to accelerate.
And we're still blathering about recycling plastics, the politics of going carbon neutral by year 2030 (or whenever), the morality of geoengineering, blah blah blah.
Our only chance is to quickly remove carbon faster than it's being added. From both human activity and earth's own natural runaway feedback loops.
Full stop.
(Cue the inevitable misanthropic pedant "well acxshwally, earth will be just fine w/o humans".)
edit: upon further investigation, maybe it's not much worse than a bunch of cows farting..
That seems completely affordable to me (vs the alternatives).
Bigger trick will be removal of stuff already in the air.