Byline: MARLA CONE Los Angeles Times
Even moderate air pollution routinely found in many U.S. cities may trigger sudden deaths by changing heart rhythms in people with existing cardiac problems, according to extensive new scientific research.
More than a dozen studies on humans and animals suggest that heart attacks, not lung disease, may be the most serious medical threat posed by air pollution.
The culprits appear to be tiny pieces of soot called particulates. Scientists caution that the link between heart problems and air pollution remains a strong likelihood -- not a certainty. More research is under way.
Severe particulate pollution …
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