Masks to protect against China's smog not always effective, tests show | CBC News
Life behind a mask — air pollution in China – DW – 01/18/2018
Asian Boy Wearing Mouth Mask Against Air Pollution Stock Photo - Download Image Now - iStock
Do Pollution Masks Really Work? – Smart Air
China Fights Pollution with Transparency - The New Yorker | The New Yorker
How did China's air pollution get this bad? | China Dialogue
How a 'Toxic Cocktail' Is Posing a Troubling Health Risk in China's Cities - Yale E360
Groups push for standards on PM2.5 anti-smog masks amid concern over fakes | South China Morning Post
Beijing, China. 25th Dec, 2015. Students wearing masks walk on a smog-shrouded street for a school event in Beijing, Dec. 25, 2015. An orange alarm has been issued to alert smog and
A High-Tech Pollution Mask for China - YouTube
Choosing an Air Pollution Mask for China - David's Been Here
Pollutionwatch: do face masks really prevent the ill effects of pollution? | Air pollution | The Guardian
China pollution: Survey finds 70% of firms break regulations - BBC News
How Bad Does the Air Pollution Have to Be Before You'd Wear a Face Mask? | ChinaFile
China Holds Five Officials Over 'Falsification' of Air Monitoring Data — Radio Free Asia
China Smog Triggers Demand for Masks, Filters, but Hobbles Deliveries
PHOTOS: Smog smothers Beijing in city's first-ever pollution red alert | PBS NewsHour
Amid China's Smog Worries, One More: Counterfeit Masks - The New York Times
4.2 Causes and Consequences of Air Pollution in Beijing, China | Environmental Biology
South Korea seeks rain project with China to clear air pollution - CGTN
China: Desperate Consumers Snap Up 'Anti-Pollution' Products | Time
Masks, Purifiers and Condoms: Online Sales Spike as China's Smog Thickens - WSJ
Life behind a mask — air pollution in China – DW – 01/18/2018
Rooftop sensors on U.S. embassies are warning the world about 'crazy bad' air pollution | Science | AAAS
