I've read a few times that the population of the entire US south only really started to grow in earnest once AC was invented. Ah, here's an article: https://ww

I've read a few times that the population of the entire US south only really started to grow in earnest once AC was invented. Ah, here's an article: https://www.nytimes.com/2017/08/04/upshot/the-all-conquering-air-conditioner.html https://www.nytimes.com/2017/08/04/upshot/the-all-conquering... It's pretty crazy because growing up in central/northern Alberta, I never even really encountered air conditioning until I was into my early 20s and moved to southern Ontario (where living without it would be complete hell in the summer, hot humid disgusting "I feel like I'm being smothered in someone's armpit" summers). Our cars never had it and our houses certainly didn't need it; just an open window. Summers were mild and the heat when it came was a dry heat. But now when I go home to visit there, A/C is everywhere there, and it's frankly needed; the last summer I spent time out at my parents west of Edmonton there were multiple days in a row over 30C and it was frankly quite hellish and them having a ground source heat pump that cooled the house was a godsend. Just the 2-3C difference in peak temperatures from the 80s til now is enough to push it over the edge into new territory.