U.S. Air Quality Was Improving. Now It’s Getting Worse

Bloomberg

After years of decline, air pollution in the U.S. has spiked and may have taken the lives of almost 10,000 additional Americans over a two-year period, according to a new analysis of EPA data. Particulate matter in the U.S. dropped 24 percent between 2009 and 2016, but increased 5.5 percent in 2017 and 2018.

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