"Very few people on earth ever get to say: ‘I am doing, right now, the most important thing I could possibly be doing.’ If you'll join this climate fight, that's what you'll get to say.” Building on that Bill McKibben thought, we invited him to Aspen so we could hear from the world's leading climate expert and, of course, to go skiing. #giveaflake ( 🎥 : @andycurtis55)