Why do you assume climate change simply means ‘it’ll get a couple degrees hotter everywhere?’ Will this ancient air conditioner allow Florida residents to continue living in their homes under 6 feet of water?

What it means is more energy in the atmosphere which will be unleased in things like hurricanes, tornados, blizzards, floods, and yes, hotter weather. It isn’t going to change the entire planet into a desert climate, but it will make lots of areas uninhabitable.