Harmful emission trade-offs

How much CO2 is a ton of SO2 worth?
Valero's Benicia, Calif., refinery releases an additional 16,000 metric tons of carbon dioxide because of the extra energy needed to operate the ULSD unit for a year, while the "corresponding reduction in tailpipe emissions expressed as reduced SO2 [sulfur dioxide] is about 200 tons" for that fuel, Cuffel said.
A question for ecologists, environmental economists, and the broader public to contemplate together…

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