A kid wears a nose mask respirator against heavy smog as he plays with a kick scooter in Beijing, capital of China, Nov. 29, 2014. China's capital city was again caught in a heavy smog on Saturday. Beijing's municipal air pollution control authorities recorded an AQI (air quality index) reading of 300, which denotes very unhealthy air quality. (Xinhua/Luo Xiaoguang) |