Interesting article and most likely quite true. However, how much easier is it to improve emissions on a handful of power plants versus the gazillions of cars out there? How much cheaper is it to decrease emissions on a handful of buildings versus the tons of cars that are out there dating back to the early 1900s. How much easier would it be to track pollution on a handful of powerplants versus the vehicles on the road? It may not be a perfect solution at this exact point in time, but its definitly a step in the right direction.
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