Phoenix being unlivable is such a fearmongered point. Much of Arizona is already out of extreme drought, and is set up to be extremely livable due to solar & nuclear power plus innovations made in air conditioning and pulling water out of the air.
"much of the planet", whatever "much" means exactly and whether or not the claim is true, should refer to the number of people affected. Essentially, how much do we care about people in poor countries dying of thirst, starving and attempting to migrate while stey still can? A lot of people live in the places you "can understand writing off". What happens to them?
