Interactive report

Get a close look at the Valley's air-quality problem with audio, video, animations, and an interactive quiz and game. You also can check the smog-test results of any California vehicle or light truck.

Listen to Bee staff

In a podcast, the reporters on the "Fighting for Air" special section discuss the pollution challenge facing the Valley.

Stories

Escaping smog

These families and people have left the Valley, blaming health problems caused by air pollution.

Graphics

ESCAPING SMOG: Bob Claypool

Background: Bob Claypool, 52, was a Fresno dentist.

Why he left: Doctors told him he had asthma and allergies, although they could never find what he was allergic to, he said. Drugs didn't help much.

Now: Bob sold his Fresno dental practice in 2005 and moved to a condominium in San Diego. The coastal air has been good for his health, he said. For the past year, he's not needed asthma medicine.