Beijing Smog

Beijing Smog

http://uk.news.yahoo.com/beijing-air-pollution--causes-of-smog-in-china-125026173.html#Zi99H73

http://uk.news.yahoo.com/beijing-pollution-hazardous-fourth-day-050631939.html

http://www.bbc.co.uk/news/world-asia-china-21007893

http://app1.kuhf.org/articles/npr1358175313-Beijings-Airpocalypse-Spurs-Pollution-Controls,-Public-Pressure.html

http://world.time.com/2013/01/14/beijing-chokes-on-record-pollution-and-even-the-government-admits-theres-a-problem/