Fighting pollution helps children's health, landmark study says

SALT LAKE CITY — A concentrated effort to reduce emissions across the spectrum of air pollution sources brought levels down dramatically in Southern California over the past 20 years, and with that drop came a signficant improvement in children's respiratory health.

Those findings released Tuesday are in a landmark study researched by the University of Southern California and published in the Journal of the American Medical Association.

Reformulated gasoline fuel, the advent of catalytic converters or emission control devices on cars, a cleaner burning vehicle fleet overall, and industry controls are among a suite of tactics that four Southern California counties implemented to achieve pollution reductions.

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