> The prospect of U.S.-style air conditioning sends shivers through some Europeans. In France, media outlets often warn that cooling a room to more than 15 degr

> The prospect of U.S.-style air conditioning sends shivers through some Europeans. In France, media outlets often warn that cooling a room to more than 15 degrees Fahrenheit below the outside temperature can cause something called “thermal shock,” resulting in nausea, loss of consciousness and even respiratory arrest. That would be news to Americans who expect indoor temperatures to be cooled to around 75 degrees even when it is near 100 outside.