 And air conditioners tend to be pretty inexpensive. For a room air conditioner, $400, $500 is the price of a smartphone these days. So over the next 30 years, 10 air conditioners will be sold every second. That's the kind of demand that you see around the world. And if every one of those people were to buy a traditional type of air conditioning unit that's on the market right now, what kind of impact could that have on the climate?