AOL.com Video - Chinese Dissident Ai Weiwei Joins Outcry Over Pollution

VIDEO:News

Chinese Dissident Ai Weiwei Joins Outcry Over Pollution

Description:Beijing shrouded in a cloud of pollution. The city, notorious for bad air quality, saw levels far above hazardous conditions over the weekend on an index that measures particulate matter in the air. A level of 300 is considered dangerous, while the World Health Organization recommends a daily level of no more than 20. Beijing's air reached 755 over the weekend. (1:30)

Source: Reuters

Tags: reuters , ai weiwei , greenpeace