Air pollution shuts schools in Iran's capital

Schools in Tehran were ordered to be closed on Wednesday after the Iranian capital was cloaked in dangerously high levels of air pollution, authorities said.

India's capital restricts cars as people choke in dirty air

Authorities restricted many private vehicles from taking to the roads of India's capital on Monday amid a public health crisis that has left New Delhi residents gasping and their eyes burning from toxic air pollution.

Living with air pollution

People wearing smoke masks, children going stir-crazy indoors, families driving hours to find fresh air. Alarming as it is to some, unhealthy air enveloping the San Francisco Bay Area in recent days is all too familiar to ...

What you should know about air quality alerts

"It's a code red day for ozone." If you hear this on your local news, what does it mean? Are you at risk? Do you know what to do? An air quality alert like this informs the public about pollution levels in the air and advises ...

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