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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.
Smog, or smoke fog, is a type of intense air pollution.The word "smog" was coined in the early 20th century, and is a portmanteau of the words smoke and fog [1] to refer to smoky fog due to its opacity, and odor. [2]
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.
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An air pollution episode is an unusual combination of emissions and meteorology - usually low or stagnant winds and temperature inversion - that creates prolonged and widespread air pollution lasting two to seven days. Effects range from eye irritation to deaths across age groups. [1] Examples of air pollution episodes include: 1930 Meuse ...
Under the Dome (Chinese: 穹顶之下; pinyin: Qióngdǐng zhī xià) is a 2015 self-financed Chinese documentary by Chai Jing, a former China Central Television journalist, and Ming Fan, [2] the documentary director, her long-term working partner at CCTV, concerning air pollution in China.
New coal plants are built to relieve the pressure, but they result in drastically increased air pollution. Water shortages become rampant, with insufficient water available for drinking or farming, and desalination plants are built. Looting leads to martial law in many countries.
There are air pollution experts who view smog filtration tower projects with scepticism. For example, Professor Alastair Lewis , Science Director at the NCAS , has argued that static air cleaners, like the prototypes in Beijing and Delhi, cannot process enough city air, quickly enough, to make a meaningful difference to urban pollution.