Couldn’t we do this in a more localized way for large cities? Like a big ol’ shade satellite for areas being dangerously affected by heat waves? I know it’s just a bandaid but we will need these kinds of extreme weather mitigation techniques to keep us alive so we can solve climate change or die trying.

Ps I’m not a scientist, so this is a sci-fi idea only - as in idk the maths of what this would take.