When world-class cross-country skiing meets climate change

Picture a mountain village in Europe, the site of a World Cup cross-country skiing event. A pristine blanket of snow coats trees and rooftops. Spectators cradle cups of hot chocolate in mitten-clad hands, as athletes glide past on a perfectly groomed track. That's the postcard version, anyway. In the era of climate change, the reality is often less idyllic. "When it's warm and wet, the snow …