Supposing all anthropogenic emissions went to zero today, we'd still keep warming almost as far as three degrees with all of the disasters and famines that entails, because there's a lag time between existing emissions and their effects.

We need massive bounty programs that pay out irrespective of nationality for every possible kind of improvement and gain to carbon capture technology if we want to prevent 90% of all land on Earth between 30°N and 30°S from slowly turning into copies of the uninhabitable stretches of the Middle East.