 Not much change in our weather with an excessive heat warning continuing in southwest Arizona. Yuma's high today could reach 115 with 20-mile-per-hour wind gusts. The low tonight for Yuma around 85. And in Parker, the high today could reach 117 with 5 to 10-mile-per-hour winds. The low tonight for Parker around 82. This is Freakonomics Radio, the show that explores the hidden side of everything with your host, Stephen Dubner.