pollution

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pollution

pollution, contamination of the environment as a result of human activities. The term pollution refers primarily to the fouling of air, water, and land by wastes (see air pollution; water pollution; solid waste). In recent years it has come to signify a wider range of disruptions to environmental quality. Thus litter, billboards, and auto junkyards are said to constitute visual pollution; noise excessive enough to cause psychological or physical damage is considered noise pollution; and waste heat that alters local climate or affects fish populations in rivers is designated thermal pollution.

The 20th cent. has seen pollution approach crisis proportions throughout the world. At issue is the capacity of the biosphere to disperse, degrade, and assimilate human wastes (see ecology). The biosphere is a closed ecological system with finite resources and is maintained in equilibrium by grand-scale recycling. Under natural conditions organic and certain inorganic materials in the biosphere are continually recycled by processes including photosynthesis and respiration, nitrogen fixation and denitrification (see nitrogen cycle), evaporation and precipitation, and diffusion by wind and water action. But the introduction of massive quantities of waste matter at any point in the biosystem may “overload” it, disrupting the natural recycling mechanisms.

Public Recognition of Pollution as a Problem

Public awareness that the environment could not absorb limitless amounts of waste came with the Industrial Revolution, but long before then the burning of wood and other fuels indoors for heating and cook was a significant health hazard (and still is in lesser developed regions). By the latter part of the 19th cent. many industrial areas were experiencing severe air pollution caused by the burning of coal to run mills and machinery. The quantities of fly ash, smoke, carbon and sulfur gases, and other wastes had become too great for local environments—like those of London and Pittsburgh—to disperse rapidly. Similarly, industrial effluents and sewage were polluting river systems. Not until after World War II, however, was pollution generally viewed as more than a nuisance that blackened buildings and sullied streams, i.e., as a pervasive threat to human health.

By the 1960s the threat had become great enough, many believed, to challenge the integrity of the ecosystem and the survival of numerous organisms including humans. Population explosion, industrial expansion, and burgeoning truck and automobile use were producing wastes in such gigantic quantities that natural dispersing and recycling processes could not keep pace. Exacerbating the problem was the appearance of new substances that degraded with extreme slowness or not at all: plastics, synthetic fibers, detergents, synthetic fertilizers, synthetic organic pesticides such as DDT, synthetic industrial chemicals such as the polychlorinated biphenyls (PCBs), and the wastes from their manufacture.

Thus waterways and dumps festered with disease-breeding garbage. Industrial wastes created corrosive smogs and, with municipal wastes, polluted inland and marine waters, including drinking supplies. Automobile emissions choked urban and suburban communities. Pesticides and PCBs poisoned fish and birds. These conditions, persisting into the 1970s as year by year waste output increased, evoked demand in many nations, and on the part of the United Nations, for worldwide pollution abatement.

The National Environmental Policy Act in 1969 and the establishment of the Environmental Protection Agency the following year was a turning point in federal regulatory policy. Since then Congress has also passed the Clean Air Act (1970), the Clean Water Act (1972), the Noise Control Act (1979), and the Comprehensive Environmental Response, Compensation, and Liability Act (1980), more commonly known as the Superfund Act, which created a fund to clean up hazardous waste sites. While the United States and many other industrialized nations have acted to control and reduce pollution, many developing nations, such as China, have experienced increased pollution as they have industrialized.

The potential for environmental disaster has been dramatically underscored by such events as the evacuation of Love Canal (1978); the chemical accident at the Union Carbide plant in Bhopal; the oil spills from the tankers Torrey Canyon off Cornwall, England (1967), Amoco Cadiz off Brittany, France (1978), Exxon Valdez in Alaska (1989), Braer off the Shetland Islands (1993), and Prestige off Galicia, Spain (2002) as well as from offshore oil wells; and the nuclear accidents at Three Mile Island (1979) and at Chernobyl in Ukraine (1986).

Control and Abatement

The cost of substantially reducing industrial pollution is high; how to finance it without undue economic burden remains a question. Some experts hold that since population growth automatically increases waste production, pollution can best be combated by population control. Another view is that worldwide proliferation of industry and technology is the chief culprit, posing the threat of global warming and requiring curtailment if pollution is to be conquered. The early 1990s brought discussion of more effective means to calculate the true costs of pollution in terms of its effects on health, productivity, and quality of life. There is considerable agreement, nonetheless, on the need for revised technology to diminish industrial and automotive emissions, to produce degradable wastes, and to dispose of all wastes in ways less damaging to the environment—for example, by returning sewage to the farm as fertilizer and by recycling glass and metal materials. Finally, improvement is required in techniques for preventing pollution by especially hazardous wastes. The difficulty of finding adequate permanent storage locations has been increased by opposition from residents of potential sites, who are concerned about health hazards. In 1997 more than 1.3 million people 05/05in the United States were employed in environmental industries related to pollution control.

See environmentalism; land use; pollution allowance.

Bibliography

See B. Commoner, Science and Survival (1966) and The Closing Circle (1971); M. H. Brown, The Toxic Cloud (1987); C. S. Silver, One Earth, One Future (1988); J. Marte et al., Toxics A to Z (1991); M. Feshbach and A. Friendly, Jr., Ecocide in the USSR (1992).

The Columbia Electronic Encyclopedia™ Copyright © 2022, Columbia University Press. Licensed from Columbia University Press. All rights reserved.

Pollution

Any direct or indirect alteration to the environment which is hazardous, or potentially hazardous, to health, safety, and welfare of any living species.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Pollution

 

the discharge of semen, usually during sleep. It is usually accompanied by erotic dreams, which may not be remembered after deep sleep. The first pollutions are one of the signs of sexual maturity and occur at the age of 14 or 15. An adult male may experience pollutions after prolonged sexual restraint. The age when pollutions begin and their subsequent frequency depend on the individual’s constitution, temperament, general state of health, way of life, and direction of interests.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

pollution

[pə′lü·shən]
(ecology)
Destruction or impairment of the purity of the environment.
(physiology)
Emission of semen at times other than during coitus.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

pollution

The action of degrading an environment by discharging harmful substances into the air, soil, or water, or by increasing noise to an unacceptably high level, so that the site is less desirable for (or is harmful to) residential, commercial, or social purposes.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
The goal of the project is to assist low- and middle-income countries to take measures to cope with environmental pollution and its impact on human health.
The theme of the conference was 'Militating Against Environmental Pollution Through Mathematical Modeling for Sustainable Development', which Prof Onah said was apt the focus of most researches today was on the prediction of the pollutant transportation and transformation in order to provide vital information for the management of air and water qualities.
The minister announced that no dereliction would be tolerated as controlling environmental pollution was a service to humanity.
New Delhi [India], Oct 11 ( ANI ): The National Green Tribunal (NGT) has observed that the national capital is facing severe environmental pollution issues and the delay caused by Aam Aadmi Party (AAP)-led Delhi government in finalising the State Action Plan on Climate Change is further enhancing the problem.
Moreover, CDA held responsible of massive encroachments and environmental pollution in Islamabad.
Owing to unawareness about it, it is causing severe challenges of sewerage system in city and spreading environmental pollution. It is affecting the beautification of Quetta city.
Speaking on the occasion, the DC said that now a days, environmental pollution
According to sources, more than 10,000 brick kilns being operative in 37 districts of Punjab including the provincial capital, were adding to environmental pollution on a daily basis.
Lahore -- Scientists have been warning the authorities for quite some time about the harmful effects of environmental pollution. They say that by 2050 some parts of the world will experience extreme heat, making human survival very difficult.
Aamara / NINA /-- Chairman of health and the environment Committee in Maysan province , Maytham Fartusi said increasing of cancer infection in Maysan province as a result of environmental pollution.
The capital city of Kyrgyzstan needs new meteorological stations, Larisa Titova, chief of the department of surveillance and information about radioactivity and environmental pollution of the Kyrgyz Meteorological Office.There are 14 such stations across the country, which keep track of the environmental pollution.

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