 Well, there's nothing. No. If listeners heard anything, it's the window unit next door. It's the neighbor's air conditioning unit. That's right. Cox turns his A.C. on once a year just to make sure it still works. He wrote a book in 2010 called Losing Our Cool. It's a statistics-packed takedown of air conditioning's grip on American life. He says cities in the Sun Belt, from Florida to Arizona...