"how did people live before ACs were invented? can't imagine" You can tell from the fact that Florida was almost empty, just half a million people in 1900. It

"how did people live before ACs were invented? can't imagine" You can tell from the fact that Florida was almost empty, just half a million people in 1900. It didn't grow too much until about 1950 (2.8 million), when the population started to soar - through immigration, not by having a wild birthrate. Nowadays, 23 million, and more are coming every day, even though the place is notorious for its hurricanes. https://www.macrotrends.net/global-metrics/states/florida/population https://www.macrotrends.net/global-metrics/states/florida/po... Ubiquitous AC that made southern states more attractive is one of the reasons why the Northeast no longer dominates the US economy and politics. And worldwide, places like Singapore, Bangalore and Tel Aviv could hardly dream of becoming hi-tech metropolises before AC.