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  2. Philadelphia - Wikipedia

    en.wikipedia.org/wiki/Philadelphia

    Philadelphia County received an ozone grade of F and a 24-hour particle pollution rating of D in the American Lung Association's 2017 State of the Air report, which analyzed data from 2013 to 2015. [ 115 ] [ 116 ] The city was ranked 22nd for ozone, 20th for short-term particle pollution, and 11th for year-round particle pollution. [ 117 ]

  3. Beijing - Wikipedia

    en.wikipedia.org/wiki/Beijing

    During and prior to these events, Beijing's air quality improved dramatically, only to fall back to unhealthy levels shortly after. On 8 and 9 December 2015 Beijing had its first smog alert which shut down a majority of the industry and other commercial businesses in the city. [117] Later in the month another smog "red alert" was issued. [118]

  4. Mumbai - Wikipedia

    en.wikipedia.org/wiki/Mumbai

    Air pollution is a major issue in Mumbai. [196] [197] [198] According to the 2016 World Health Organization Global Urban Ambient Air Pollution Database, [199] the annual average PM2.5 concentration in 2013 was 63 μg/m 3, which is 6.3 times higher than that recommended by the WHO Air Quality Guidelines [200] for the annual mean PM2.5

  5. Auckland - Wikipedia

    en.wikipedia.org/wiki/Auckland

    Auckland occasionally suffers from air pollution due to fine particle emissions. [65] There are also occasional breaches of guideline levels of carbon monoxide . [ 66 ] While maritime winds normally disperse the pollution relatively quickly it can sometimes become visible as smog, especially on calm winter days.

  6. Obesity in the United States - Wikipedia

    en.wikipedia.org/wiki/Obesity_in_the_United_States

    Share of adults that are obese, 1975 to 2016. Obesity is common in the United States and is a major health issue associated with numerous diseases, specifically an increased risk of certain types of cancer, coronary artery disease, type 2 diabetes, stroke, and cardiovascular disease, as well as significant increases in early mortality and economic costs. [1]

  7. Austin, Texas - Wikipedia

    en.wikipedia.org/wiki/Austin,_Texas

    Austin, Travis County and Williamson County have been the site of human habitation since at least 9200 BC. The area's earliest known inhabitants lived during the late Pleistocene (Ice Age) and are linked to the Clovis culture around 9200 BC (over 11,200 years ago), based on evidence found throughout the area and documented at the much-studied Gault Site, midway between Georgetown and Fort Cavazos.

  8. Isotopes of chlorine - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_chlorine

    Chlorine (17 Cl) has 25 isotopes, ranging from 28 Cl to 52 Cl, and two isomers, 34m Cl and 38m Cl. There are two stable isotopes, 35 Cl (75.8%) and 37 Cl (24.2%), giving chlorine a standard atomic weight of 35.45.

  9. Antimicrobial properties of copper - Wikipedia

    en.wikipedia.org/wiki/Antimicrobial_properties...

    Under these conditions, copper participates in the so-called Fenton-type reaction — a chemical reaction causing oxidative damage to cells. Excess copper causes a decline in the membrane integrity of microbes, leading to leakage of specific essential cell nutrients, such as potassium and glutamate. This leads to desiccation and subsequent cell ...