> You say this like the climate hasn't changed so much in the last 50 years that AC has gone from a luxury to a necessity in many parts of the world. Empirical

> You say this like the climate hasn't changed so much in the last 50 years that AC has gone from a luxury to a necessity in many parts of the world. Empirically it has not. Just because Americans who aren't acclimatized to high temperatures "need" A/C, doesn't mean it's a necessity, considering people living in far hotter climates do without.