Gaga, Green Day, Post Malone primed to headline sweltering Coachella

The opening day promises to be a scorcher, quite literally; a dome of high pressure is triggering a mini heat wave in southern California, with meteorologists predicting the temperature could crack 100 degrees Fahrenheit (37.8 degrees Celsius). Organizers are urging the tens of thousands expected to arrive at the poorly shaded festival grounds to stay hydrated and use sunscreen as they gather to see other day-one lineup highlights including rapper Missy Elliott, Australian electropop band Parcels...