CanWest News Service: I’m flying to Alberta next week and starting to feel more than a tad guilty about it. Not because I’m abandoning my work, loved ones and responsibilities in order to fish. I never feel guilty about fishing. No, the reason for my angst has to do with the unintended consequences of my flight, specifically, my contribution to global warming via carbon dioxide emissions. Air travel, you see, has become the latest cause celebre of the eco-set, including such august, …