The iconic skyline of downtown Los Angeles has been clouded by smog for decades, so this title should come as no surprise to ...

It would take years for scientists to piece together the puzzle of this Los Angeles smog and decades to implement policies to improve the air we all breathe. Today, scientists are able to monitor the ...

An annual report from the American Lung Assn. showed that Los Angeles has improved its air quality but still deserves its ...

Our region was found to have the worst ozone, or smog, pollution in the country, according to the annual ranking.