I wound my way down Muddy Creek — in the heart of Utah’s Swell — deeper into a canyon that narrowed with every mile. The morning sun, still inching its way above the horizon, promised a warm, clear ...

In 2012, one teenager's party became wildly popular — with dangerous consequences. That year, Dutch teenager Merthe Weusthuis was turning 16. She invited 78 people over to her house via Facebook ...