The air pollution levels in the sky over Tiananmen Square during the National People’s Congress (NPC) in Beijing is seen in this combination picture taken on the dates March 6, 7, 8, 9, 10, 11, 12, 14 and 15 (L-R) in 2013. Chinese Premier Li Keqiang pledged on March 17, 2013 that his government would “show even greater resolve” in tackling China’s festering pollution crisis, a source of increasing public fury. Air quality in Beijing has mostly stayed above “very unhealthy” and “hazardous” levels since the beginning of this year. REUTERS/Wei Yao (CHINA – Tags: ENVIRONMENT SOCIETY POLITICS TPX IMAGES OF THE DAY) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA – RTR3F5FV
