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  2. Air pollution - Wikipedia

    en.wikipedia.org/wiki/Air_pollution

    Air pollution can occur naturally or be caused by human activities. [4] Air pollution causes around 7 or 8 million deaths each year. [5] [6] It is a significant risk factor for a number of pollution-related diseases, including heart disease, stroke, chronic obstructive pulmonary disease (COPD), asthma and lung cancer.

  3. In North Carolina, the N.C. Division of Air Quality, or DAQ, measures pollution like ozone and PM 2.5, or particulate matter that is much smaller than the width of a human air. Air quality ...

  4. Air pollution in the United States - Wikipedia

    en.wikipedia.org/wiki/Air_pollution_in_the...

    Looking down from the Hollywood Hills, with Griffith Observatory on the hill in the foreground, air pollution is visible in downtown Los Angeles on a late afternoon.. Air pollution is the introduction of chemicals, particulate matter, or biological materials into the atmosphere that cause harm or discomfort to humans or other living organisms, or damage ecosystems.

  5. Risks from ash and air pollution remain for people returning ...

    www.aol.com/risks-ash-air-pollution-remain...

    As people return to the structures spared from Los Angeles wildfires, experts warn that they should be careful of the air inside and be especially cautious when cleaning up. Smoke, ash and all the ...

  6. Pollution - Wikipedia

    en.wikipedia.org/wiki/Pollution

    Various definitions of pollution exist, which may or may not recognize certain types, such as noise pollution or greenhouse gases.The United States Environmental Protection Administration defines pollution as "Any substances in water, soil, or air that degrade the natural quality of the environment, offend the senses of sight, taste, or smell, or cause a health hazard.

  7. Pollution kills 9 million people per year, study says [Video]

    www.aol.com/news/pollution-kills-9-million...

    A new study by a leading medical journal finds that deaths from pollution have increased to 9 million people each year — roughly one of six annual deaths worldwide. Air pollution, contaminated ...

  8. Air quality guideline - Wikipedia

    en.wikipedia.org/wiki/Air_quality_guideline

    The reports provide guidelines intending to give guidelines to reduce the health effects of air pollution. [2] The guidelines stipulate that PM 2.5 should not exceed 5 μg/m 3 annual mean, or 15 μg/m 3 24-hour mean; and that PM 10 should not exceed 15 μg/m 3 annual mean, or 45 μg/m 3 24-hour mean. [2]

  9. In Los Angeles, people snap up air filters and wear masks ...

    www.aol.com/news/los-angeles-people-snap-air...

    Small particles are some of the most health-damaging air pollution, linked to a range of chronic and deadly health issues, according to the U.S. Environmental Protection Agency.