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  1. Mar 26, 2024 · Smog is a term for polluted air that results from various sources and reactions. Learn about the two main types of smog: sulfurous and photochemical, and their impacts on health, environment, and climate.

    • The Editors of Encyclopaedia Britannica
  2. en.wikipedia.org › wiki › SmogSmog - Wikipedia

    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 to refer to smoky fog due to its opacity, and odor.

  3. Oct 19, 2023 · Smog is air pollution that reduces visibility and can be harmful to health and the environment. Learn about the causes, effects, and solutions of smog from this encyclopedia article by National Geographic. Find out how smog is produced by sunlight reacting with nitrogen oxides and VOCs, and how it can be reduced by changing behaviors and laws.

  4. www.airnow.govAirNow.gov

    AirNow.gov provides air quality data for your local area, state, nation, and world. Learn about the latest updates on particle pollution standards, the National Air Quality Conference, and how to get air quality data.

  5. Aug 24, 2021 · Smog is a mixture of air pollutants that form ground-level ozone, which can be harmful or beneficial depending on its location. Learn about the sources, locations, and health and environmental impacts of smog, and how to measure its levels using the Air Quality Index.

    • Larry West
  6. Smog is a hazy air pollution that can blanket urban areas with ground-level ozone and particulate matter. Learn how ozone and particulate matter are formed, how they affect human health and the environment, and how to reduce smog from Caltech Science Exchange.

  7. Apr 25, 2024 · Learn how smog, soot, and other air pollution from transportation contribute to poor air quality and health, and how EPA programs and standards can reduce emissions and improve health. Find out about the benefits of stringent emissions standards for vehicles, fuels, and engines, and the impact of international emission control areas and port strategies.

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