Thick air shrouding Beijing forced authorities to cancel flights and close expressways, state media reported Monday.
The Beijing Capital International Airport canceled 56 departing flights and delayed dozens of others Monday morning, the state-run Xinhua news agency said.
State media offered conflicting descriptions of what caused the haze.
"Smog disrupts flights at Beijing airport," a headline from the Xinhua news agency said. The state-run China Daily newspaper, citing Beijing's weather officials, said melting snow made the air wet and caused heavy fog that "crippled traffic, delayed flights and created obstacles in the highways in many places of North China since Saturday."FULL STORY