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  2. Pollution - Wikipedia

    en.wikipedia.org/wiki/Pollution

    Pollution is the introduction of contaminants into the natural environment that cause adverse change. [1] Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring ...

  3. Air pollution - Wikipedia

    en.wikipedia.org/wiki/Air_pollution

    Air pollution can occur naturally or be caused by human activities. [3] Air pollution causes around 7 million deaths each year. [4] [5] 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.

  4. Pollution in the United States - Wikipedia

    en.wikipedia.org/wiki/Pollution_in_the_United_States

    Pollution from the Exxon Valdez oil spill As with many countries, pollution in the United States is a concern for environmental organizations , government agencies, and individuals. Billions of pounds of toxic chemicals are released into the air, land, and waterways in the U.S. each year.

  5. Communities facing air pollution threats worry about EPA ...

    www.aol.com/news/communities-facing-air...

    Houston — Donna Thomas is a pollution warrior in Houston, Texas. She wears a mask because she believes a lifetime of breathing polluted air in her community contributed to a stroke four years ago.

  6. Climate's 'Catch-22': Cutting pollution heats up the planet

    www.aol.com/news/climates-catch-22-cutting...

    The drop in pollution was accompanied by a leap in warming - the nine years since 2014 have seen national average annual temperatures in China of 10.34C, up more than 0.7C compared with the 2001 ...

  7. 25 Most Polluted Cities in the World

    www.aol.com/news/25-most-polluted-cities-world...

    Pollution is one of the biggest issues facing most of the world right now. In fact, it is the […] In this article, we will be taking a look at the most polluted cities in the world. To skip our ...

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