How Air-Conditioning Made Us Expect Arizona to Feel the Same as Maine

One force has quietly shaped much of the world around us — our homes, our offices, the look of our cities, the migration patterns of Americans and the economic fortunes of different parts of the country.That is: air-conditioning.It’s become so widespread as to be unremarkable, an assumed feature of every interior environment. Nearly 90 percent of Americans use some kind of air-conditioning at home. It is humming…