Tens of thousands of festivalgoers were stranded Sunday in deep mud in the Nevada desert after rain turned the annual Burning Man gathering into a quagmire, with police investigating one death. Video footage showed costume-wearing “burners” struggling across the wet gray-brown site, some using trash bags as makeshift boots, while dozens of vehicles became stuck in the sludge. Many events at the counterculture festival, which drew some 70,000 people, were canceled when rain tore down […]