Migration. Large parts of the taiga and permafrost are about to open up to human habitation. All the folks in the Middle East and India should move north in search of better weather.
Human societies have been historically very bad at handling large scale migrations, but it's about to become necessary.
Apart from all the other issues (societal, etc) with that the climate of Yakutsk[1] can give an indication of how hospitable that region is. Spoiler: It’s temperature span is over 100C (nearly 200F). Brutal winters, brutal summers.
there was an article during the recent Oregon heat wave by someone who moved to the PNW as a hedge against climate change. that heat wave killed almost 200 people and is estimated to have killed a billion marine animals.
Migration is not going to cut it. Climate change is making weather more chaotic and unpredictable. Escape is impossible. The only place you can go where the planetary weather system’s disintegration does not pose a danger is space, where the absence of that same disintegrating weather system makes survival even harder.
No place is going to be safe, but some places are going to be a lot safer than others. The PNW or Canada is a lot better bet than the Middle East or Bangladesh.
Reversal is not really an option either; the best scientific evidence I've seen is that we've already past several tipping points that will accelerate warming regardless of what we do, and even if we haven't, we've had about zero decrease in worldwide CO2 emissions and a terrible track record in getting humanity to work together for common good.
Human societies have been historically very bad at handling large scale migrations, but it's about to become necessary.