Over 90% of world breathing bad air: WHO

Nine out of 10 people globally are breathing poor quality air, the World Health Organization said Tuesday, calling for dramatic action against pollution that is blamed for more than six million deaths a year.

China sets pace for smoggy Hong Kong: think-tank

Beijing's decision to come clean on its dirty air has embarrassed Hong Kong, where smog kills hundreds of people a year, hurts business and drives away talent, a think-tank has said.

Record air pollution hammers Calif's ag heartland

(AP) -- This is the time of year when residents who often live with the nation's worst pollution often can draw a breath of fresh air. But this winter has not been kind to people who want to play outside in California's ...

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