What is air pollution?
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The air pollution is the phenomenon when the unwanted, unrequired & harmful substances are added in our environment or in short in air.
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A temperature inversion is a meteorological phenomenon in which air temperature increases with height for some distance above the ground, as opposed to the normal decrease in temperature with height. This effect, which can be caused by a number of different factors, can lead to pollution such as smog being trapped close to the ground, with possible adverse effects on health.
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Of course its bad... I mean it harms our lungs and it has carbon monoxide which can kill us by taking oxygen.\n\nAir pollution also causes Acid Rain and it harms the Ozone Layer. So with Air Pollution our lovely Earth's being destroyed.
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A mixture of H2O and air pollution...
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Pollution is a subject that is timely and relevant. There is plenty of information on pollution in LA. It's the most polluted city in the US.\n\nImmigration is also a good topic. What will the racial makeup of LA be in the future?
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A temperature inversion will not allow air from the surface to mix with air above the surface. This leads to calm winds and the smog stays concentrated over the same area for prolonged periods. This is usually associated with a high pressure system. A low pressure system that moves into the area can cause surface winds to increase and mix the polluted air with cleaner air higher in the atmosphere and spread the pollution over a larger area. The lack of an inversion can also lead to mixing and spread the pollution vertically in the atmosphere. One can predict the beginning and ending of high pollution days by monitoring weather forecasts.
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Contrails are condensation trails (sometimes vapour trails): artificial cirrus clouds made by the exhaust of aircraft engines or wingtip vortices which precipitate a stream of tiny ice crystals in moist, frigid upper air. Contrary to appearances, they are not air pollution as such, though might be considered visual pollution.
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I don't know about overall in countries, but the most polluted cities are those that quickly adopted cars and industrialization without long periods of social and educational development that promote environmental issue.  \n\nBy that criteria, the most polluted cities in the world include: \nSeoul, Korea\nBangkok, Thailand\nDelhi and Bombay, India\nJakarta, Indonesia\nMexico City, Mexico
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Working in environmental analytics, pollution situations are a common experience. One of the most common occurrances of pollution is sullage or liquid manure in surface waters, absolutely deadly for all life forms requiring oxygen from the water, and poisonous for plants in high concentrations, too.\n\nPollution can be quite natural...
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Environmental pollution is the release of environmental contaminants, generally resulting from human activity. Carbon monoxide, sulfur dioxide and nitrogen oxides produced by industry and motor vehicles are common air pollutants. Sunlight converts nitrogen oxides and hydrocarbons to ozone or smog. Water pollutants may consist of a wide range of organic and inorganic chemicals such as heavy metals, petrochemicals, chloroform, and bacteria. Water pollution may also occur in the form of thermal pollution and oxygen depletion. Soil contamination is an important aspect of environmental pollution; this phenomenon occurs when chemicals are released by spill or underground storage tank leakage. Among the most significant soil contaminants are hydrocarbons, heavy metals, MTBE, herbicides, pesticides and chlorinated hydrocarbons.
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Air pollution is a broad term applied to all physical (particulate matter), chemical, and biological agents that modify the natural characteristics of the atmosphere.\n\nSome definitions also consider physical perturbations such as noise pollution, heat, radiation or light pollution as air pollution.[citation needed] Definitions commonly include the term harmful as a requisite to consider a change to the atmosphere as pollution.\n\nAir pollutants are classified as either primary or secondary; a primary air pollutant is one that is emitted directly to the air from a given source, such as the Carbon monoxide produced as a byproduct of combustion, whereas a secondary air pollutant is formed in the atmosphere through chemical reactions involving primary air pollutants. The formation of ozone in photochemical smog is an example of a secondary air pollutant.\n\nThe atmosphere is a complex, dynamic and fragile system. Concern is growing about the global effects of air pollutant emissions, especially global warming. Stratospheric ozone depletion due to air pollution has long been recognized as a threat to human health.
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A lung disease caused by extremely small particles of Volcanic ash and dust..\n\nI din't have to google it, i knew it ;).. i read it in a book long time ago. I even have the book now, so i gave you the exact defination from the book :)
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Nitrogen is the most abundent element in our atmosphere.  Bacteria gets N2 from the air.
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More Pollution\nMore Dead birds on the road\nThe darn AC doesn't work\nGas prices.
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acid deposition, form of precipitation (rain, snow, sleet, or hail) containing high levels of sulfuric or nitric acids (pH below 5.5—5.6). Produced when sulfur dioxide and various nitrogen oxides combine with atmospheric moisture, acid rain can contaminate drinking water, damage vegetation and aquatic life, and erode buildings and monuments. Automobile exhausts and the burning of high-sulfur industrial fuels are thought to be the main causes, but natural sources, such as volcanic gases and forest fires, may also be significant. It has been an increasingly serious problem since the 1950s, particularly in the NE United States, Canada, and W Europe, especially Scandinavia.
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http://en.wikipedia.org/wiki/Noise_pollution\n\nNoise pollution is unwanted human-created sound that disrupts the environment. Noise pollution can be caused by many sources including highways, vehicles,police cars, ambulances, factories, concerts, music, air-conditioners, engines, machine, aircraft, helicopters, alarms, public address systems, industrial development and construction work. In general, noise pollution refers to any noise irritating to one's ear which comes from an external source. The word "noise" comes the Latin word "nausea" meaning seasickness.\n\n\nThis PIL was filed in the Hon'ble High Court of Delhi. The petition relates to the pollution caused by the crackers during the festivals like Diwali, Dusshera etc. The busting of crackers not only causes noise pollution but also air pollution besides heap of garbage is also accumulated in that day. Although authorities have been taking measures for controlling the pollution as directed by the Hon'ble High Court from time to time. Various meetings had also been conducted to get the relief. The standards for the fire crackers had been notified No.GSR 682(E), dated Oct.5, 1999. That the Hon'ble High Court of Delhi directed that: -\n\nNotification No.GSR 682(E), dated October 5,1999 shall be strictly complied with. \nFire crackers generating noise level exceeding 125 dB(01) of 145dB at 1 meters distance from the point bursting shall not be manufacture. \nFor individual fire cracker constituting the series (Joined fire crackers), the aforesaid limit shall be reduced by 51(N) dB, where N = number of crackers joined together. \nFrom 1st November,2000, the manufacturer shall specify and record the noise level on the cracker itself. \nUse of fire-works shall not be permitted on Dussehra, Diwali and other festivals including festivities except between 6.00 P.M to 11.00 P.M. \nFire-works shall not be used in the areas designated as silence zones. \nFire-works shall not be used near hospitals and nursing homes. \nPeople should be educated and made aware of the ill-effects air and noise pollution caused by the indiscriminate use of fireworks. For this purpose, Doordarshan and other TV channels should show quickies, on prime time, for at least five times a day. During the fortnight before Dussehra and Diwali, Directorate of Advertising and Visual Publicity. Ministry of Information and Broadcasting shall also give appropriate advertisements through newspapers. Besides All India Radio should broadcast appropriate messages on prime time on FM and other frequencies for circulation of the information in this regard. \nCPCB and CDP(Licensing) shall prepare slides/films fir showing adverse consequences of air and noise pollution and shall be shown/screened in all cinema halls of Delhi before all the daily shows. \nSteps should be taken by the managements of all schools in Delhi to educate students about the ill-effects of air and noise pollution. \nManufacture, Sale and use of rockets, maroons and atom bombs of a noise level higher than the one prescribed in Notification No.GSR 682(E), dated October 5,1999 shall not be permitted.
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* Population\n* Pollution\n* Aids/HIV