In the space of an afternoon, Beijing vanished. For days, the city was crisp and clear. Beijing's smog: When a scale of zero to 500 doesn't go high enough - Los Angeles Times ...

Reporting from Beijing — When cold wind didn’t arrive as expected, participants in the annual Beijing Marathon had to endure the 26-mile race in the thick smog surrounding the city. But world ...

For days, images of New York choking in smoke have stunned the United States, as residents struggle to deal with the unfamiliar challenge of severe air pollution. CNN values your feedback 1.

Hazardous smog blights Beijing 27 photos. Last month, Beijing marathoners ran in hazardous smog. More than half of the days this year have been polluted enough to be a health hazard.

BEIJING – Smog in China's capital Beijing has climbed back into the unhealthy range as the second pollution red alert of December goes into effect. A wave of smog settled over the city of 22.5 ...

BEIJING — Beijing was enveloped in eye-watering, throat-irritating smog Saturday as the second red alert of the month went into effect in the Chinese capital, forcing many cars off the roads and ...

Last week was another one of those weeks in Beijing: all anyone could talk about was the smog. A brief respite after rainfall Wednesday night served only to underline just how bad things have been ...

An international study led by researchers at the Paul Scherrer Institute PSI has used a new method to identify the various sources of aerosols that create smog in Beijing.

The International School of Beijing, where tuition is north of $37,000 a year, built a pressurized dome for kids to play in during the smog. It cost $5 million. (Some public schools have also ...