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2. California Smog Check Program - Wikipedia

   en.wikipedia.org/wiki/California_Smog_Check_Program

   Some STAR stations are test-only stations, while other STAR stations are test-and-repair. [24] Until a smog certificate can be provided registration will not be renewed. If the vehicle fails the smog check, the owner will be required to complete all necessary repairs and pass a smog check retest in order to complete the registration.

3. Vehicle inspection in the United States - Wikipedia

   en.wikipedia.org/wiki/Vehicle_inspection_in_the...

   Vehicle emissions inspection station in Wisconsin. Arizona – biennially, in Phoenix and Tucson metro areas only, depending on age and type of vehicle. [28]California – biennially for all vehicles from out-of-state, regardless of age; and all vehicles made after 1975 which are more than six years old in all or some zip codes in 41 out of 58 counties.

4. 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 ...

5. News, Politics, Sports, Mail & Latest Headlines - AOL.com

   homepage.aol.com

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

6. Smog - Wikipedia

   en.wikipedia.org/wiki/Smog

   Smog, or smoke fog, is a type of intense air pollution.The word "smog" was coined in the early 20th century, and is a portmanteau of the words smoke and fog [1] to refer to smoky fog due to its opacity, and odor. [2]

7. Smog tower - Wikipedia

   en.wikipedia.org/wiki/Smog_tower

   Smog free tower in Beijing. Smog towers or smog free towers (see below for other names) are structures designed as large-scale air purifiers to reduce air pollution particles . This approach to the problem of urban air pollution involves air filtration and removal of suspended mechanical particulates such as soot and requires energy or power.