Buildings are seen shrouded in heavy haze at Qingdao development zone, Shandong province

Buildings are seen shrouded in heavy haze at Qingdao development zone, Shandong province

Buildings are seen shrouded in heavy haze at Qingdao development zone, Shandong province, February 25, 2014. China’s north is suffering a pollution crisis, with the capital Beijing itself shrouded in acrid smog. Authorities have introduced anti-pollution policies and often pledged to clean up the environment but the problem has not eased. Picture taken February 25, 2014. REUTERS/Stringer (CHINA – Tags: ENVIRONMENT) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA – RTR3FQ85