Smog has reached alarming levels in Beijing and much of northern China, forcing parents to keep their children inside and sending many to the hospital.
Monitors say that air pollution has soared past healthy levels, reaching up to 40 times the standard set by the World Health organisation in some parts of the country, according to official readings reported in the Associated Press.
Hospitals reported increases of up to 30% in the number of patients reporting breathing problems, and Chinese officials have warned that bad visibility and hazardous air conditions will likely last until Wednesday, the Guardian reported.
A visitor stretches her arms as she surveys Beijing's Forbidden City through a haze on Sunday, January 13.
This well labelled image, taken on January 13 by the NASA/NOAA Suomi NPP satellite and posted to the NOAA Environmental visualisation Laboratory, gives a view from space.
He tweets: 'Beijing's missing skyline: today (left) vs. what you should be seeing behind me (right).'
Visitors, surrounded by Beijing's smog, stand in line in Tiananmen Square for China's May Day in May 2008.
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