The rates of childhood asthma in the United States rose 160 percent from 1980 to 1994 and have remained high ever since, making this chronic lung illness the country's third most common pediatric disease. QUEST meets Bay Area researchers who are investigating possible environmental and social culprits.
It's not just truckers that will have to spend a lot of money to retrofit their diesel engines. And quite a few trucks on California roads will actually be unaffected by a new California diesel regulation. The California Air Resources Board is expected to vote on a new diesel-emissions regulation when the board meets on December 11 and 12 in Sacramento.