I mean you covered some pretty serious solutions, but the only things I can think of (I’m not an expert) are the indoor/vertical/hydroponic farming mentioned above, or genetically modifying crops to withstand horrible conditions, or the good 'ole painting houses and streets white to lower temperatures.

There’s probably a lot more information out there, but I’m just not aware of most of it. I know mostly about how bad things are, not necessarily how we should fix it quickly.

It goes without saying the only way we sustainably fix it will be under socialism.