It is the world's best-known national park, with a controversy that no amount of snow can bury. Rosy-cheeked snowmobilers extol the glories of riding through a winter wonderland, while environmentalists decry the noise, the air pollution, and the harm to wildlife. There seems to be no room for compromise. In this first book-length study of winter use in any national park, Michael Yochim examines the longstanding conflict between the National...