Dense fog hits E, C China, causing serious air pollution (1/8)

The Beihai Park is shrouded in heavy fog in Beijing, January 13, 2013. The capital's air pollution reached dangerous levels again on Sunday, marking the third consecutive day of severe smog. The municipal meteorological station issued the city's first orange fog warning Sunday morning due to decreased visibility caused by the heavy smog. Dense fog on Sunday hit China's east and central regions from the northeast to the south, causing serious air pollution. [Photo: CNS/Zhang Wei]