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Beijing air pollution hits 'hazardous' level | The Star
Do Pollution Masks Really Work? – Smart Air
Inside Beijing's airpocalypse – a city made 'almost uninhabitable' by pollution | Cities | The Guardian
Polluted Skies Heighten Challenge for Chinese Government - The New York Times
Beijing's smog: A tale of two cities | CNN
Asian Boy Wearing Mouth Mask Against Air Pollution Stock Photo - Download Image Now - iStock
Air Pollution Is Making Us Sick and Causing Climate Change | Time
Fear, Then Skepticism, Over Antibiotic-Resistant Genes in Beijing Smog - The New York Times
How Bad Does the Air Pollution Have to Be Before You'd Wear a Face Mask? | ChinaFile
Beijing Residents Are Using Smog Masks to Make Fashion Statements
China's Air Pollution Is So Bad, the Sun's Rays Can't Reach Solar Panels, Study Says | The Weather Channel - Articles from The Weather Channel | weather.com
Masks, Purifiers and Condoms: Online Sales Spike as China's Smog Thickens - WSJ
Rooftop sensors on U.S. embassies are warning the world about 'crazy bad' air pollution | Science | AAAS
Beijing issues first pollution red alert as smog engulfs capital
Beijing's second air pollution 'red alert' is a sign
PHOTOS: Smog smothers Beijing in city's first-ever pollution red alert | PBS NewsHour
Choosing an Air Pollution Mask for China - David's Been Here
China pollution: First ever red alert in effect in Beijing - BBC News
China Smog Triggers Demand for Masks, Filters, but Hobbles Deliveries
China Holds Five Officials Over 'Falsification' of Air Monitoring Data — Radio Free Asia
A combination photograph shows people wearing masks on a heavy haze day during winter in Beijing January 29, 2013. Beijing's air pollution returns to 'hazardous' levels, two weeks after record readings of
Pollutionwatch: do face masks really prevent the ill effects of pollution? | Air pollution | The Guardian
4.2 Causes and Consequences of Air Pollution in Beijing, China – Environmental ScienceBites
Asian boy wearing mouth mask against air pollution (Beijing) - Chemical Insights