Record smog level shuts down Shanghai
Shanghai authorities ordered schoolchildren indoors and halted all construction Friday as China's financial hub suffered one of its worst bouts of air pollution, bringing visibility down to a few dozen meters.
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Levels of PM 2.5 - tiny particles in the air considered particularly hazardous to health - rose to more than 600 micrograms per cubic metre in the afternoon, Shanghai's government said on its microblog. That is 24 times the World Health Organization's (WHO) safety guideline of 25 micrograms.
.jpg "Levels of PM 2.5 - tiny particles in the air considered particularly hazardous to health - rose to more than 600 micrograms per cubic metre in the afternoon, Shanghai's government said on its microblog. That is 24 times the World Health Organization's (WHO) safety guideline of 25 micrograms.")
.jpg "Airborne particles have been linked to hundreds of thousands of premature deaths, and the problem has tarnished the image of Chinese cities including Beijing, which saw an almost 15 percent drop in tourist visits during the first half of this year.")
