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Report: Air quality in California improving, but challenges remain




The Downtown Los Angeles skyline on the morning of Al Gore's visit in which he congratulated Mayor Antonio Villaraigosa and the city for committing itself to cleaner energy alternatives, March 22. (This is an HDR image.)
The Downtown Los Angeles skyline on the morning of Al Gore's visit in which he congratulated Mayor Antonio Villaraigosa and the city for committing itself to cleaner energy alternatives, March 22. (This is an HDR image.)
Christopher Okula/KPCC

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A new report out from the California Air Pollution Control Officers Association finds that air quality statewide has improved over the past 12 years. 

For more on this and on an interesting study on how pollution travels, we're joined now by Suzanne Paulson, a professor at UCLA's Department of Atmospheric & Oceanic Sciences