BEIJING (AP) — One of Beijing's worst rounds of air pollution kept schoolchildren indoors and sent coughing residents to hospitals, but this time so...

BEIJING — Pollution in Beijing was so bad Friday the U.S. Embassy, which has been independently monitoring air quality, ran out of conventional ...

Pollution brings Beijing back into the past -- like New York, Los Angeles, and Tokyo in the fifties and sixties -- when a "London fog" would make the noontime look like night .

The events leading up to today's opening ceremony illuminated much of Beijing's environmental issues. China went to great efforts to reduce the city's...

When I was out on the pale white moonscape of the Olympic green on Monday, my throat had the particular tickle of particulates. It wasn't just the intense heat -- and I wasn't even running the 10,000 meter.

Unlike many of the issues seeking political spotlight at the Games, greenhouse gases do not recognize national borders.