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  2. Glen Echo Park (Maryland) - Wikipedia

    en.wikipedia.org/wiki/Glen_Echo_Park_(Maryland)

    Glen Echo Park is an arts and cultural center in Glen Echo, Maryland, a suburb of Washington, D.C. Located about 9 miles (14 km) northwest of the city's downtown area, the park's site was initially developed in 1891 as a National Chautauqua Assembly. Following the foreclosure and sale of the Chautauqua grounds in 1903, leisure facilities were ...

  3. Air pollution - Wikipedia

    en.wikipedia.org/wiki/Air_pollution

    e. Air pollution is the contamination of air due to the presence of substances called pollutants in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. [ 1 ] It is also the contamination of the indoor or outdoor environment either by chemical, physical, or biological ...

  4. National Ambient Air Quality Standards - Wikipedia

    en.wikipedia.org/wiki/National_Ambient_Air...

    National Ambient Air Quality Standards. The U.S. National Ambient Air Quality Standards (NAAQS, pronounced / ˈnæks / naks) are limits on atmospheric concentration of six pollutants that cause smog, acid rain, and other health hazards. [1] Established by the United States Environmental Protection Agency (EPA) under authority of the Clean Air ...

  5. Air pollution in the United States - Wikipedia

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

    Anthropogenic air pollution has affected the United States since the beginning of the Industrial Revolution. [2] According to a 2024 report: "39% of people living in America—131.2 million people—still live in places with failing grades for unhealthy levels of ozone or particle pollution."

  6. Environmental issues in New York City - Wikipedia

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

    Central Park 's reservoirs were historically important components of the New York City water supply system. Environmental issues in New York City are affected by the city's size, density, abundant public transportation infrastructure, and location at the mouth of the Hudson River. New York's population density has environmental pros and cons.

  7. Indoor air quality - Wikipedia

    en.wikipedia.org/wiki/Indoor_air_quality

    v. t. e. Indoor air quality (IAQ) is the air quality within buildings and structures. Poor indoor air quality due to indoor air pollution is known to affect the health, comfort, and well-being of building occupants. It has also been linked to sick building syndrome, respiratory issues, reduced productivity, and impaired learning in schools.

  8. Much-needed rain helps wildfire suppression efforts, air ...

    www.aol.com/york-city-awakes-smell-smoke...

    November 9, 2024 at 5:49 AM. NEW YORK — Residents across New York City awoke to a thin brown haze, the smell of smoke Saturday, and worsening air quality as a nearby wildfire and chilly morning ...

  9. Ground-level ozone - Wikipedia

    en.wikipedia.org/wiki/Ground-level_ozone

    Ground-level ozone (O3), also known as surface-level ozone and tropospheric ozone, is a trace gas in the troposphere (the lowest level of the Earth's atmosphere), with an average concentration of 20–30 parts per billion by volume (ppbv), with close to 100 ppbv in polluted areas. [1][2] Ozone is also an important constituent of the ...