A woman (C) wearing a mask stands besides her bicycle as vehicles stop at a traffic junction on a busy street amid thick haze in Beijing: companies that specialise in making vehicle emissions cleaner are rushing to take advantage of Beijing’s war on pollution. Photograph:  Barry Huang/Reuters

It has been more than a week since the last heavy pollution, with occasional rainstorms keeping the smog at bay, and it is easy to forget the pollutio(...)

Chinese tourists wearing  face masks at Tiananmen Square, Beijing, during severe pollution today. Photograph: Lintao Zhang/Getty Images

Air pollution in Beijing has literally gone off the charts, going beyond “hazardous” into uncharted territory, and even the authorities are now(...)

A man wears a mask on Tiananmen Square in thick haze in Beijing in January this year. Worsening air pollution has been cited as one of the reasons for declining tourist numbers. Photograph: Ng Han Guan/AP

Pollution is becoming a political issue in China, and the government is making a lot of noises about getting serious about resolving smog and water po(...)