Pollution from the expanding shoreline of the Salton Sea may not be significant contributor to the region’s air problems.

Some researchers suggest more emphasis on what people are breathing at home, school and work as the best way to protect health.

For years, millions of dollars have poured into controlling dust that wafts off the exposed lake shoreline of the Salton Sea, hoping to solve a serious air pollution problem in the Coachella and Imperial valleys.

But a new report finds that the dusty shoreline is only responsible for a small percentage of the pollution, prompting some researchers to emphasize that cleaner air inside people’s homes, workplaces and schools could be more important in addressing the asthma and respiratory disease that plague the area.

“My big takeaway is that

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