Air pollution and health
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Category: Energy and Environment & Global Warming
Source: infopedia.nlb.gov.sg, Author: www
Page: 6 pages
Much has also been researched and written about the greenhouse effect, ozone
depletion, melting of ice glaziers and global warming.
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Air Pollution
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Introduction Search Terms and Call Numbers Books Databases Websites
Introduction
Air pollution is the contamination of the atmosphere due to the release of toxic substances such as noxious gases and very tiny particles, usually as a result of the burning of fossil fuels. Such noxious gases include carbon monoxide, nitrogen oxide and sulphur dioxide. There are many causes of air pollution and most are a result of man’s activities. Common sources of air pollution are exhaust from vehicles, industrial plant emissions and deforestation. Research and studies have shown that air pollution leads to detrimental impacts on the environment, such as smog, haze and acid rain, particularly in large urban and industrial centres with a high vehicle population. Various air quality measurements such as the pollutants standards index (PSI) have also been created to ensure safe and acceptable air standards. Much has also been researched and written about the greenhouse effect, ozone depletion, melting of ice glaziers and global warming. Indoor air pollution also occurs as a result of people performing up to 90% of their activities indoors. Common causes are smoking, emissions from household appliances and vapours from coolants and paints. Both indoor and outdoor pollution can have adverse health effects. Exposure to air pollutants may lead to shortterm effects such as reduced visibility, headaches, allergic reactions, irritation to the eyes, nose and throat, and longer term effects such as breathing difficulties, asthma and various chronic respiratory illnesses such as lung cancer and heart disease. In infants and young children, the effects can be far worse as their respiratory defences have not been fully formed, affecting their lung development and breathing capacities.
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Policies, measures and legislation to deal with the problem of air pollution has been a cause of perennial international debate and many non-profit groups and organisations have been set up by concerned citizenry in the effort to increase awareness of how individuals can help to contribute to the earth’s continued sustainability. This PathFinder serves as a guide to help you locate resources on air pollution that are available at the National Library Board libraries as well as on the Internet.
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