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Topic: Air pollution

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	Air Pollution - MSN Encarta
		Air pollution is the human introduction into the atmosphere of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living...
		Some air pollutants return to Earth in the form of acid rain and snow, which corrode statues and buildings, damage crops and forests, and make lakes and streams unsuitable for fish and other plant and animal life.
		Air pollution is subject to weather patterns that can trap it in valleys or blow it across the globe to damage pristine environments far from the original sources.
	encarta.msn.com /encyclopedia_761577413/Air_Pollution.html (1182 words)

	Air pollution - Wikipedia, the free encyclopedia
		Worldwide air pollution is responsible for large numbers of deaths and cases of respiratory disease.
		A direct release air pollutant is one that is emitted directly from a given source, such as the carbon monoxide or sulfur dioxide, all of which are byproducts of combustion; whereas, a subsequent air pollutant is formed in the atmosphere through chemical reactions involving direct release pollutants.
		The basic technology for analyzing air pollution is through the use of a variety of mathematical models for predicting the transport of air pollutants in the lower atmosphere.
	en.wikipedia.org /wiki/Air_pollution (2621 words)

	Air Pollution Causes
		The primary air pollutants found in most urban areas are carbon monoxide, nitrogen oxides, sulfur oxides, hydrocarbons, and particulate matter (both solid and liquid).
		Indoor air will be healthier than outdoor air if you use an energy recovery ventilator to provide a consistent supply of fresh filtered air and then seal air leaks in the shell of your home.
		The two main sources of pollutants in urban areas are transportation (predominantly automobiles) and fuel combustion in stationary sources, including residential, commercial, and industrial heating and cooling and coal-burning power plants.
	healthandenergy.com /air_pollution_causes.htm (2101 words)

	Encyclopedia :: encyclopedia : Air pollution (Site not responding. Last check: )
		Air pollution is a broad term applied to all physical (particulate matter), chemical, and biological agents that modify the natural characteristics of the atmosphere.
		Carbon monoxide is an example of a primary air pollutant because it is produced as a byproduct of combustion.
		Concern is growing about the effects of air pollutant emissions in a global context, and the inter-linkage of these emissions with global warming, climate change and stratospheric ozone depletion.
	www.hallencyclopedia.com /Air_pollution (1605 words)

	Air Pollution
		Air pollution can threaten the well-being of humans, trees, lakes, crops, and animals, as well as damage the ozone layer and buildings.
		A primary air pollutant is one that is emitted directly to the air from a given source, such as the Carbon monoxide (CO) produced as a byproduct of combustion; whereas a secondary air pollutant is formed in the atmosphere through chemical reactions involving primary air pollutants.
		Direct causes of air pollution related deaths include aggravated asthma, bronchitis, emphysema, lung and heart diseases, and other respiratory allergies.
	www.juliantrubin.com /encyclopedia/environment/airpollution.html (1981 words)

	Air Pollution - Bay Pressures - Chesapeake Bay Program
		Air pollution not only affects the quality of the air we breathe; it also impacts the land and the water.
		Nitrogen and chemical contaminants are two groups of pollutants that are of concern to water quality and are known to be emitted into the air.
		Pollutants released into the air are carried by winds and fall back to the earth's surface via rain, snow, fog or dry particles.
	www.chesapeakebay.net /air_pollution.htm (808 words)

	ATSDR - Air
		Pollution usually refers to the presence of substances that are either present in the environment where it doesn't belong or at levels greater than it should be.
		Gaseous pollutants: A different mix of vapors and gaseous air pollutants is found in outdoor and indoor environments.
		The Air Quality Index is a tool used by EPA and other agencies to provide the public with timely and easy-to-understand information on local air quality and whether air pollution levels pose a health concern.
	www.atsdr.cdc.gov /general/theair.html (985 words)

	MedlinePlus: Air Pollution
		Air pollution is a mixture of solid particles and gases in the air.
		Ozone, a gas, is a major part of air pollution in cities.
		Air pollution isn't just outside – the air inside buildings can also be polluted and affect your health.
	www.nlm.nih.gov /medlineplus/airpollution.html (414 words)

	About Air Pollution in Texas - Texas Commission on Environmental Quality - www.tceq.state.tx.us
		Air pollution develops when human activity and natural sources affect this gaseous mix.
		A red sunrise or sunset is caused by the matter in the air bending the sunlight toward the red end of the light spectrum.
		Their lungs are still developing, and they breathe more rapidly and inhale more air pollution per pound of body weight than adults.
	www.tceq.state.tx.us /assistance/P2Recycle/P2Week/airpollution.html (556 words)

	September 17, 2002: Air Pollution Fatalities Now Exceed Traffic Fatalities by 3 to 1
		U.S. air pollution deaths are equal to deaths from breast cancer and prostate cancer combined.
		While deaths from heart disease and respiratory illness from breathing polluted air may lack the drama of deaths from an automobile crash, with flashing lights and sirens, they are no less real.
		In China, which has some of the world's worst urban air pollution, the illnesses and deaths of urban residents due to air pollution are estimated to cost 5 percent of the gross domestic product.
	www.earth-policy.org /Updates/Update17.htm (1097 words)

	Pollution
		Pollution is the addition to the ecosystem of someting which has a detrimental effect on it.
		Air pollution is the accumulation in the atmosphere of substances that, in sufficient concentrations, endanger human health or produce other measured effects on living matter and other materials.
		Water pollution is the introduction into fresh or ocean waters of chemical, physical, or biological material that degrades the quality of the water and affects the organisms living in it.
	www.botany.uwc.ac.za /sci_ed/grade10/ecology/conservation/poll.htm (703 words)

	Air Pollution
		The extent to which an individual is harmed by air pollution usually depends on the total exposure to the damaging chemicals, i.e., the duration of exposure and the concentration of the chemicals must be taken into account.
		One type of air pollution is the release of particles into the air from burning fuel for energy.
		Air pollution is dispersed differently, depending on the geographical location, temperature, wind and weather factors.
	www.gpc.edu /~pgore/Earth&Space/GPS/airpollution.html (1606 words)

	Air Pollution, Environment, Health, Disease; Chemical Toxicity
		Air pollution, both indoor and outdoor, is a significant cause of health problems worldwide.
		There are five obvious sources of air pollution - the burning of fossil fuels, the cutting of forests and burning of slash, the increasing use of agricultural and industrial chemicals, the continued smoking of tobacco products, the creation if indoor work and living environments which concentrate air contaminants and create "sick buildings."
		A decrease in indoor air quality is the result of reduced ventilation and efficient construction practices, sealing homes and office buildings from the outdoor environment.
	www.nutramed.com /environment/airpollution.htm (387 words)

	Air Quality Information
		Pure air is a mixture of invisible and odorless gases, mainly nitrogen and oxygen with small amounts of water vapor, argon, carbon dioxide, neon, helium and hydrogen.
		On average most adults breathe roughly 35 pounds of air per day, or around 20,000 breaths, and children breathe almost twice that amount, as they are smaller and still developing their respiratory systems.
		Mother Nature has played the largest role in the history of air pollution to this point, with volcanic eruptions, dust storms, and forest fires, but there is a new player on the horizon in modern times.
	www.airqualityinfo.org (317 words)

	EUROPA - Environment - Air Quality
		The Community is acting at many levels to reduce exposure to air pollution: through EC legislation, through work at the wider international level in order to reduce cross-border pollution, through working with sectors responsible for air pollution and with national, regional authorities and NGOs, and through research.
		Background information on pollutants and their effects on health can be found in the Air Quality Guidelines of the WHO and information on other air pollution effects and data can be obtained from the EEA.
		Air Pollution policy is characterised by transparency both in the day-to-day proceedings and in the way research data and technical analysis are used for policy developments.
	ec.europa.eu /environment/air (359 words)

	Great Smoky Mountains National Park - Air Quality (U.S. National Park Service)
		Air pollution is shrinking scenic views, damaging plants, and degrading high elevation streams and soils in the
		Pollution typically appears as a uniform whitish haze, different from the natural mist-like clouds for which the Smokies were named.
		To remedy air pollution problems at the park, additional reductions of nitrogen oxides and sulfur dioxide are necessary.
	www.nps.gov /grsm/naturescience/air-quality.htm (1432 words)

	Consumer Information: Glossary of Air Pollution Terms
		of air pollution (e.g., power plants, highway construction, and housing developments) within a given county, and governed by a district air pollution control board composed of the elected county supervisors.
		A group of counties or portions of counties, or an individual county specified in law with authority to regulate stationary, indirect, and area sources of air pollution within the region and governed by a regional air pollution control board comprised mostly of elected officials from within the region.
		Air pollutants that occur within buildings or other enclosed spaces, as opposed to those occurring in outdoor, or ambient air.
	www.arb.ca.gov /html/gloss.htm (5285 words)

	Air Pollution, Heart Disease and Stroke
		A person’s relative risk due to air pollution is small compared with the impact of established cardiovascular risk factors such as smoking, obesity, or high blood pressure. However, this is a serious public health problem because an enormous number of people are exposed over an entire lifetime.
		Published data from the American Cancer Society cohort suggested that long-term exposure to fine particulate air pollution at levels that occur in North America is associated with increased risk for cardiovascular mortality by 12 percent for every 10 micrometers of particulate matter within 1 cubic meter of air.
		A 2007 study presented at the American Heart Association's annual Scientific Sessions indicated that increased roadway pollution produced by diesel fuel in vehicles is leading to a cascade of conditions that could result in heart attack or stroke.
	www.americanheart.org /presenter.jhtml?identifier=4419 (1551 words)

	BBC NEWS \| Health \| Air pollution causes early deaths
		Air pollution is responsible for 310,000 premature deaths in Europe each year, research suggests.
		A study by the European Commission calculated that air pollution reduces life expectancy by an average of almost nine months across the European Union.
		Poor quality air is thought to result in more than 32,000 premature deaths in the UK each year alone.
	news.bbc.co.uk /1/hi/health/4283295.stm (510 words)

	: Weather Underground
		However, air pollution remains a serious threat to public health and the environment.
		Outdoor air pollution in the U.S. due to particulate pollution alone was estimated by the EPA in 1997 to cause at least 20,000 premature deaths each year.
		The EPA maintains a database of air pollution forecasts generated for over 150 locations for these six pollutants by the local or state agencies responsible.
	www.wunderground.com /health/airpollution.asp (514 words)

	Air Pollution Control Equipment - Air Pollution Control - Air Pollution Control Equipment Manufacturers – Air ...
		Air pollution control equipment removes and eliminates a wide variety of pollutants, known as volatile organic compounds (VOCs)—including fumes, gases, odors and vapors—from the atmosphere.
		The air is raised to the operating temperature and passed through the catalyst, causing a heat releasing reaction to take place.
		Air scrubbers consist of a fan containing several filters that separate contaminants from clean air and recirculate the air into the atmosphere.
	www.iqsdirectory.com /air-pollution-control (2230 words)

	[No title]
		Air pollution is a broad term applied to all chemical and biological agents that modify the natural characteristics of the atmosphere.
		The sources of air pollution are divided in two groups: anthropogenic (caused by human activity) and natural.
		The worst single incident of air pollution to occur in the United States occurred in Donora, Pennsylvania in late October, 1948
	wikiwhat.com /encyclopedia/a/ai/air_pollution_1.html (288 words)

	Highbeam Encyclopedia - Search Results for Air pollution (Site not responding. Last check: )
		air pollution AIR POLLUTION [air pollution] contamination of the air by noxious gases and minute particles of solid and liquid matter (particulates) in concentrations that endanger health.
		Particulate air pollution and chronic respiratory symptoms among traffic policemen in Bangkok.
		Air pollution and fatal lung disease in three Utah counties.
	www.encyclopedia.com /SearchResults.aspx?Q=Air+pollution (865 words)

	Fact Sheet: Air Pollution (for New Drivers)
		Air pollution is the contamination of air by the discharge of harmful substances.
		Air pollution also can result in haze, which reduces visibility in national parks and elsewhere, and can sometimes interfere with aviation.
		Hazardous air pollutants are released by sources such as chemical plants, dry cleaners, printing plants, and motor vehicles including cars, trucks, buses, planes.
	www.nsc.org /ehc/mobile/airpollu.htm (1502 words)

	Air (Site not responding. Last check: )
		Air pollution contributes to illnesses, including cancer, detrimentally affects respiratory and reproductive systems and can cause mental impairment.
		The national ambient (outdoor) air quality standards are established for six common pollutants that are produced in substantial quantities throughout the country - ozone, carbon monoxide, sulfur dioxide, particulate matter, oxides of nitrogen, and lead.
		Control strategies include preventing and reducing emissions of air pollutants from stationary sources such as industries, utilities, and small businesses, and from mobile sources (e.g. vehicle emissions) through a variety of regulatory (permitting and compliance) and educational activities.
	www.mde.state.md.us /arma (276 words)

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