A woman covers her face while riding her bike.
{"Image ImageDescription": "A woman wearing a mask rides her bicycle along a street on a hazy morning in Beijing, February 28, 2013. Beijing's environmental authorities said on Thursday air quality in Beijing and nearby regions hit dangerous levels, Xinhua News Agency reported.  REUTERS/China Daily (CHINA - Tags: ENVIRONMENT SOCIETY) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA - GM1E92S11YG01", "Image Artist": "China Daily CDIC"}