Pollution alert
, December 5, 2013
College students wearing masks cover themselves with plastic bags as they participate in a performance art to raise awareness of air pollution, in Xi'an, Shaanxi province of China on December 5.
China's stability-obsessed leadership has become increasingly concerned by the abysmal air quality in cities, as it plays into popular resentment over political privilege and rising inequality in the world's second-largest economy. Reuters/Stringer