Masks were donned, and air purifiers cranked up to max, as Beijing’s chronic air pollution returned Thursday, shrouding the city’s skyline in a thick pall, and sending residents scurrying for cover as airborne particle ratings breached 20 times WHO safe levels. Exacerbating the customary deluge of smog from factories and coal-burning power plants was a…

via Beijing’s Pollution Is Currently Off the Charts Because a Huge Sandstorm Has Made the Smog Even Worse — TIME

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