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  2. Photochemical smog - Wikipedia

    en.wikipedia.org/wiki/Smog

    Photochemical smog, as found for example in Los Angeles, is a type of air pollution derived from vehicular emission from internal combustion engines and industrial fumes. These pollutants react in the atmosphere with sunlight to form secondary pollutants that also combine with the primary emissions to form photochemical smog.

  3. Pollution in California - Wikipedia

    en.wikipedia.org/wiki/Pollution_in_California

    A view of Los Angeles covered in smog. Pollution in California relates to the degree of pollution in the air, water, and land of the U.S. state of California.Pollution is defined as the addition of any substance (solid, liquid, or gas) or any form of energy (such as heat, sound, or radioactivity) to the environment at a faster rate than it can be dispersed, diluted, decomposed, recycled, or ...

  4. Los Angeles smog woes worsen as U.S. EPA threatens to ... - AOL

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  5. Smog check cheaters busted, feds say; California ring ... - AOL

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  6. Air pollution in the United States - Wikipedia

    en.wikipedia.org/wiki/Air_pollution_in_the...

    Air pollution in Los Angeles has caused widespread concerns. In 2012, the Public Policy Institute of California (PPIC) Survey on Californians and the Environment showed that 45% of citizens in Los Angeles consider air pollution to be a "big problem", and 47% believe that the air quality of Los Angeles is worse than it was 10 years ago. [99]

  7. Los Angeles air quality improves from wildfires' hazardous levels

    www.aol.com/news/los-angeles-air-quality...

    Air quality in wildfire-stricken Los Angeles improved on Thursday from hazardous peaks hit earlier this month, as tiny soot particles that can penetrate the lungs and brain dropped to moderate ...

  8. File:AerialViewPhotochemicalSmogMexicoCity 2.jpg - Wikipedia

    en.wikipedia.org/wiki/File:AerialView...

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  9. Southern California gets $500 million from the EPA to fight ...

    www.aol.com/news/epa-grants-500-million-help...

    A team of Southern California economists recently published a study that found the federal government could drastically reduce aviation emissions by offering to pay airlines to scrap aging ...