written by Bill McKibben  Canada has emerged as one of the countries at the front line of the climate fight--the vast pools of carbon in Alberta and elsewhere mean Canada will be either a climate hero or a villain. So far its government is headed in the wrong direction, but it's been inspiring to start watching average Canadians stand up to that money-soaked sell out. And my experience around the world convinces me that young people will be at the forefront of the fight, as they almost always are  I've spoken to Powershifts on four continents. They're where the work of the climate movement really gets done! Bill McKibben is the founder of 350.org and will be delivering a keynote address on Saturday evening at PowerShift Canada.