Beijing has issued its first red alert for smog, urging schools to close and invoking restrictions on factories and traffic that will keep half the city's vehicles off the roads.
The red alert — the most serious warning on a four-tier system adopted in recent years — was announced late Monday. It means authorities have forecast more than three consecutive days of severe smog.
Chinese artist Kong Ning symbolically yells in her costume made of hundreds of orange plastic blowing horns during her art performance raising awareness of the hazardous smog in a historical part of Beijing on Monday. Kong, whose works include themes related to China's air pollution problem, named her new performance "The Orange Horns Bride Marries the Blue Sky" and presented it dressed in orange, the colour of the second highest pollution alert level issued again in Beijing as hazardous smog blankets the capital. (Damir Sagolj/Reuters)
Readings of PM2.5 particles climbed toward 300 micrograms per cubic meter, compared with the World Health Organization's safe level of 25. The heavy smog isn't expected to improve until Thursday.
A video display on the side of a building shows a map of China amid heavy pollution and fog in Beijing, Tuesday, Dec. 1, 2015. (Mark Schiefelbein/Associated Press)
It's the second time this month that notoriously polluted Beijing has experienced a prolonged bout of smog. Most of the pollution is blamed on coal-fired power plants, along with vehicle emissions and construction and factory work.
Primary school students exercise inside the corridor of a building as outdoor activities are banned due to heavy smog, in Beijing, China, December 7, 2015. (Reuters)
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