Smoking's bad for you, so many states slap on a hefty cigarette tax-$2.57 per pack in New Jersey, for example. The feds charge $13.50 per gallon of spirits. These are the so-called sin taxes-and what greater sin is there than overheating our planet? That's why Al Gore, Paul Volcker, Thomas Friedman, and bucketloads of economists advocate a tax on carbon dioxide emissions as the simplest, most straightforward approach to reducing global warming.
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