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  1. 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.

  2. www.britannica.com › science › smogSmog | Description, Causes, Effects, & Types | Britannica

    Jul 13, 2024 · Smog, community-wide polluted air. Although the term is derived from the words smoke and fog, it is often used to describe the pall of automotive or industrial origin that lies over many cities, and its composition is variable. At least two distinct types of smog are recognized: sulfurous smog and photochemical smog.

  3. byjus.com › free-ias-prep › smogSmog - Definition, Types and How to Control its Impact on...

    It is a kind of intense air pollution. The word smog was coined in the 20th century. This article lucidly explains all the important information about smog; ranging from how it is created, harmful effects, different types, and measures that can be adapted to control Smog.

  4. www.nationalgeographic.org › encyclopedia › smogSmog - National Geographic Society

    Oct 19, 2023 · Smog is air pollution that reduces visibility. The term "smog" was first used in the early 1900s to describe a mix of smoke and fog. The smoke usually came from burning coal. Smog was common in industrial areas, and remains a familiar sight in some cities today. Today, most of the smog we see is photochemical smog.

  5. newsinfo.inquirer.net › 1835387Smog in Metro Manila not from Taal Volcano – Phivolcs, DENR

    Sep 22, 2023 · MANILA, Philippines — No, the smog you see in Metro Manila is not because of Taal, according to the Philippine Institute of Volcanology (Phivolcs) and the Department of Environment and Natural ...

  6. www.iqair.com › philippinesPhilippines Air Quality Index (AQI) and Air Pollution information...

    Smog is almost constantly hanging over the city, exacerbated by the 2.2 million vehicles that clog the streets on a daily basis. According to reports published by the World Health Organisation (WHO), levels of airborne particles of lead (Pb) are three times than the acceptable figure.

  7. www.who.int › health-topics › air-pollutionAir pollution - World Health Organization (WHO)

    Jun 25, 2024 · From smog hanging over cities to smoke inside the home, air pollution poses a major threat to health and climate. Ambient (outdoor) air pollution in both cities and rural areas is causing fine particulate matter which result in strokes, heart diseases, lung cancer, acute and chronic respiratory diseases.

  8. www.treehugger.com › what-is-smog-causes-and-effects-1204194Learn About the Causes and Effects of Smog - Treehugger

    Aug 24, 2021 · Smog is a visible form of air pollution that often appears as a thick haze. Look toward the horizon during daylight hours, and you can see how much smog is in the air.

  9. scienceexchange.caltech.edu › what-causes-smogWhat Causes Smog? - Caltech Science Exchange

    Smog is mainly made of ground-level ozone and particulate matter. Here, Caltech scientists explain the smog formation process.

  10. www.sciencefocus.com › planet-earth › what-is-smog-and-how-canWhat is smog and how can it be prevented?

    What is smog and how can it be prevented? - BBC Science Focus Magazine.

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