Mother Jones: Suppose that you live in Vancouver and you drive a car to work. Naturally, you have to get gas regularly. When you stop at the pump, you may see a notice like the one above, explaining that part of the price you're paying is, in effect, due to the cost of carbon. That's because in 2008, the government of British Columbia decided to impose a tax on greenhouse gas emissions from fossil fuels, enacting what has been called "the most significant carbon tax in the Western Hemisphere by far."
A carbon...