Chinese researcher Liu Yong shows the darkened face mask filter (left), which was exposed to smog for 10 days alongside a new filter. Photo: Chinanews.com

What goes into our lungs when we breathe in China’s severe smog?

Researcher examines fine particles on face mask left in northern China’s polluted air

Topic |   China pollution

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Chinese researcher Liu Yong shows the darkened face mask filter (left), which was exposed to smog for 10 days alongside a new filter. Photo: Chinanews.com
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