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  2. List of countries by air pollution - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_air...

    Air pollution can affect nearly every organ and system of the body, negatively affecting nature and humans alike. Air pollution is a particularly big problem in emerging and developing countries, where global environmental standards often cannot be met. The data in this list refers only to outdoor air quality and not indoor air quality, which ...

  3. List of most-polluted cities by particulate matter concentration

    en.wikipedia.org/wiki/List_of_most-polluted...

    The January 2024 version of the WHO database contains results of ambient (outdoor) air pollution monitoring from almost 5,390 towns and cities in 63 countries. Air quality in the database is represented by the annual mean concentration of particulate matter (PM10 and PM2.5, i.e. particles smaller than 10 or 2.5 micrometers, respectively). [1 ...

  4. Environment of Australia - Wikipedia

    en.wikipedia.org/wiki/Environment_of_Australia

    Major environmental issues in Australia include whaling, logging of old growth forest, irrigation and its impact on the Murray River, Darling River and Macquarie Marshes, acid sulfate soils, soil salinity, land clearing, soil erosion, uranium mining, nuclear waste, the creation of marine reserves, [16] air quality in major cities and around ...

  5. Why is air quality bad today? Here's what you need to know - AOL

    www.aol.com/why-air-quality-bad-today-124844029.html

    Poor air quality may be causing your skin irritation and itchy, dry throat. And with the nearly record-breaking summer heat set to continue at least through Labor Day, you'll need to understand ...

  6. Environmental issues in Australia - Wikipedia

    en.wikipedia.org/wiki/Environmental_issues_in...

    The Great Barrier Reef's environmental pressures include water quality from runoff, climate change and mass coral bleaching, cyclic outbreaks of the crown-of-thorns starfish, overfishing, and shipping accidents. The government of Queensland currently kills sharks in the Great Barrier Reef using drum lines, causing damage to the marine ecosystem ...

  7. Air quality index - Wikipedia

    en.wikipedia.org/wiki/Air_quality_index

    The most commonly used air quality index in the UK is the Daily Air Quality Index recommended by the Committee on the Medical Effects of Air Pollutants (COMEAP). [39] This index has ten points, which are further grouped into four bands: low, moderate, high and very high. Each of the bands comes with advice for at-risk groups and the general ...

  8. 2019–20 Australian bushfire season - Wikipedia

    en.wikipedia.org/wiki/2019–20_Australian...

    In December 2019, the air quality index (AQI) around Rozelle, an inner suburb of Sydney, hit 2,552 or more than 12 times the hazardous level of 200. [287] The level of fine particle matters, known and measured globally as PM2.5, around Sydney was also measured at 734 micrograms (0.01133 gr) or the equivalent of 37 cigarettes. [288]

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