A Brooklyn-based author is exploring the effects of climate change on ski resorts from Europe to Montana and Colorado. Porter Fox wrote Deep: The Story of Skiing and the Future of Snow. In it, Porter explores the lengthy history of skiing and talks to skiers and scientists around the world. He finds what he calls a “shocking truth,” that climate change could wipe out skiing over the next 75 years. Aspen Public Radio’s Marci Krivonen spoke with Porter.