Mr. Know-It-All: Wearing a Dust Mask to Protect Against Pollution in Beijing, China-WIRED
Health-conscious folks wondering if it’s politically correct to don a dust mask while in Beijing needn’t worry about causing a cultural offense. Mr. Know-It-All gives the dirt on how to avoid the dirt—and pollution—when in a foreign country.
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Mr. Know-It-All: Wearing a Dust Mask to Protect Against Pollution in Beijing, China-WIRED