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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.
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 ...
Photochemical smog arrived in modern cities in the 1940s and 1950s with the popularization of motor vehicles and development of new power plants. [5] May 1973 photo of East River and Manhattan skyline in heavy smog. London smog and Los Angeles smog are not exclusive to their namesake cities by any means.
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He started his air pollution research in 1948, when Southern California residents suffered stinging eyes and respiratory irritation from smog. [3] His original interest stemmed from damage to crop plants smog was causing in the Los Angeles Basin, and he had received many requests from government agencies to investigate air pollution.
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 ...
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Ground-level ozone is both naturally occurring and anthropogenically formed. It is the primary constituent of urban smog, forming naturally as a secondary pollutant through photochemical reactions involving nitrogen oxides and volatile organic compounds in the presence of bright sunshine with high temperatures. [35]