U.S. Environmental Protection Agency

March 30: Letters to the editor

Clean air and emissions standards

When I moved to Southern California in 1971, automobile emissions were poisoning the air. A recently published photo of LA’s shrouded skyline in 1973 reminded me how grim it was as the brown fog crept closer and closer to San Diego County. Fortunately, the California legislature passed increasingly strict vehicle emission standards in the next few decades, so that our air quality is much improved. We have not had a Stage 1 smog alert since 2003. Even so, our air is still not fully safe to breathe. An estimated 3,600 Californians die prematurely every year from the effects of polluted air.

Despite the impact of pollution on...