Usually, when people talk about diesel emissions, they focus on nitrous oxide levels. After all, it’s the pollutant that Volkswagen tried to hide with its emissions-cheating software. And despite its popularity as an anesthetic during surgery and as a, uh, mood enhancer, it’s also a well-known greenhouse gas that’s also responsible for depleting the ozone layer. But according to a recent study, diesels release quite a bit of carbon dioxide, as well.

Reuters reports that according to...

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