How to get to net zero carbon emissions: Cut short-lived superpollutants

Dan Drollette writes: We absolutely, positively, must tackle climate change speedily. Or as the authors of this article put it: "By 'speed,' we mean measures—including regulatory ones—that can begin within two-to-three years, be substantially implemented in five-to-10 years, and produce a climate response within the next decade or two." (Quick aside: one of the authors, Mario Molina, won the Nobel Prize in chemistry in 1995, for his work on holes in the ozone layer.)