A woman adjusts her mask as she walks past the residential apartment buildings shrouded by haze in Beijing, China. Fog and pollution descended on northern China, leading to flight cancellations and road closures at a time when millions of Chinese
A woman wearing a protective mask rides on a scooter along a overpass with near heavy traffic flow during a polluted day in Beijing.
Vehicles drive past residential apartment buildings shrouded by haze in Beijing.
A woman looks after she puts on her mask near the residential apartment buildings shrouded by haze in Beijing.
Germany's Sandra Gal, wearing a mask, gestures on the third green on a hazy day during the final round of the Reignwood LPGA Classic golf tournament at Pine Valley Golf Club on the outskirts of Beijing.
A golfer plays on the court on a hazy day at Pine Valley Golf Club on the outskirts of Beijing, China. Fog and pollution descended on northern China, forces international golf and tennis players to play in hazardous smog.
People play tennis on a court near the National Tennis Stadium, shrouded by haze in Beijing.
A Chinese woman wears a mask as she takes part in communal dancing in Heilongjiang province.
Pollution (Representational Image)
A Chinese man covers his nose and mouth as he walks on the street in Harbin in northeast China's Heilongjiang province.
A man pushes a bike onto a bridge during a day of heavy pollution in Harbin in northeast China's Heilongjiang province.
Two women cover up their mouths and noses with a jacket as they cross a street covered by dense smog in Harbin, northern China.
A woman wearing a mask walks through a street covered by dense smog in Harbin, northern China. Visibility shrank to less than half a football field and small-particle pollution soared to a record 40 times higher than an international safety standard
People wearing mask walk past a decoration for the China National Tourism Campaign with a slogan 'Beautiful China' on display along the Chang'an Avenue in Beijing. Patti Austin, the American jazz singer is forced to cancel a concert in Beijing, on
A foreign tourist wearing a mask walks in front of Tiananmen Gate in Beijing. What many commuters choking on smog have long suspected has finally been scientifically validated: air pollution causes lung cancer. The International Agency for Research
In pictures: Heavy smog shuts down Beijing and northern China