Every golfer knows the textbook rule of sports physics: hot air is less dense, so the golf ball should fly further. But if you play your golf anywhere in Southeast Louisiana during July and August, you know that textbook theory feels like a flat-out lie. You stand on the tee, flush a driver toward a 250-yard carry over a water hazard—a carry you effortlessly clear in March, April, or October. Yet, in the dead of summer, the ball falls out of the sky 5-10 yards short, plunging