What do what do we call the dirty haze that forms when air pollution combines with moisture in the air?
413875
SMOG.\n\nSmog is a kind of air pollution - the name is a portmanteau of smoke and fog. Classic smog results from large amounts of coal burning in an area and is caused by a mixture of smoke and sulphur dioxide. In the 1950s a new type of smog, known as photochemical smog, was first described. This is a noxious mixture of air pollutants including the following:\n\nnitrogen oxides, such as nitrogen dioxide \ntropospheric ozone \nvolatile organic compounds (VOCs) \nperoxyacyl nitrates (PAN) \nAll of these chemicals are usually highly reactive and oxidizing. Due to this fact, photochemical smog is considered to be a problem of modern industrialization.\n\nPhotochemical smog is a concern in most major urban centres but, because it travels with the wind, it can affect sparsely populated areas as well. Smog is caused by a reaction between sunlight and emissions mainly from human activity. Photochemical smog is the chemical reaction of sunlight, nitrogen oxides (NOx) and volatile organic compounds (VOC's) in the atmosphere, which leaves airborne particles (called particulate matter) and ground-level ozone. Nitrogen oxides are released in the exhaust of fossil fuel-burning engines in cars, trucks, coal power plants, and industrial manufacturing factories. VOC's are vapors released from gasoline, paints, solvents, pesticides, and other chemicals.
57012
Yes, when the dewpoint and the air temp meet, fog forms
439532
Your eyes are always kept moisturized and when you close your eyes are shut for a long period of time the moisture gets in that little pocket in between your eyes and your nose, then the dust in the air mixes and turns it into a type of "booger". But I have always known to call those "sleet"
1156831
Those are called contrails.  They are CONdensation TRAILS.  The hot jet exhaust hitting sub zero temperature air [it's like 40 below at 40.000 feet] condenses the moisture out of the air to form cloud trails.
174305
"Cloud Condensation Nuclei"\n\nThese are the suspended particles that water condenses around in order to form a rain drop. It may be dust, smoke, salt, or any other solid that is in aerosol form in the atmosphere.
157399
The air pollution is the phenomenon when the unwanted, unrequired & harmful substances are added in our environment or in short in air.
193179
Pollution caused by recreation, rather than industry or government.  Examples would be boaters who throw wastes overboard, noise and exhaust from SUVs and the like, etc.  We can all think of examples when we are sitting home at our computers.  The trick is to remember that the next time we visit a sensitive environment.  Even smoke from a barbecue is pollution, although perhaps a tolerable level.  Certainly all litter is pollution.
606667
a speck of dust for the water to condense around!
1016720
moisture is a by-product of combustion, as combustion is really rapid oxidation (burning).  this is why you see moisture dripping off someone's vehicle tailpipe before it heats up and evaporates.  \n\nthe aeresolized water at the rocket-competition you describe refracts the sunlight if the sun is behind you, and the launch ocurred in front, producing the rainbow.
717438
Uh, The sources on air purifiers creating toxic fumes seem to be reliable.  On the other hand, you have such a difficult time with spelling that I can't really trust your scientific knowledge.
921300
Our beautiful earth is being destroyed. Thousands and thousands of trees are being cut down in short amounts of time, and trees give us the oxygen we need to survive. People are polluting the earth by littering, dumping trash into rivers, lakes and oceans. Car exhaust and smoking causes smog and makes the oxygen layer in our atmosphere thinner. If we don’t take action, our earth will end up like one big junkyard.
380715
Rain.  you are describing the dewpoint.
1183555
Probably pollution caused by motor vehicles.
664148
What is?\n\nAcid rain" is a broad term used to describe several ways that acids fall out of the atmosphere. A more precise term is acid deposition, which has two parts: wet and dry. \n\nWet deposition refers to acidic rain, fog, and snow. As this acidic water flows over and through the ground, it affects a variety of plants and animals. The strength of the effects depend on many factors, including how acidic the water is, the chemistry and buffering capacity of the soils involved, and the types of fish, trees, and other living things that rely on the water. \n\nDry deposition refers to acidic gases and particles. About half of the acidity in the atmosphere falls back to earth through dry deposition. The wind blows these acidic particles and gases onto buildings, cars, homes, and trees. Dry deposited gases and particles can also be washed from trees and other surfaces by rainstorms. When that happens, the runoff water adds those acids to the acid rain, making the combination more acidic than the falling rain alone.\n\nPrevailing winds blow the compounds that cause both wet and dry acid deposition across state and national borders, and sometimes over hundreds of miles.\n\nRead:http://www.fs.fed.us/ne/newtown_square/aboutus/history.shtml\n\nhttp://www.nautilus.org/archives/fora/energy/9704A_VonHippel.html\n\nee this Epa report:http://www.epa.gov/airmarkets/cmprpt/arp03/summary.html
500733
fog is warm water vapour hitting colder air, smog is the warm water vapour containing particles hitting colder air, the particles make the vapour heavy so it tends to stay low in the air. Particles are usually the by product of industry... steel works, factorys etc.
814977
air pollution is everyting that kills the air and the ozone
9165
Dust is a general name for minute solid particles of diameters less than 500 micrometers (otherwise see sand or granulates) and, more generally, for finely divided matter. On Earth, dust occurs in the atmosphere from various sources: soil dust lifted up by wind, volcanic eruptions, and pollution are some examples; airborne dust is considered an aerosol and can have a strong, local radiative forcing on the atmosphere and significant effects on climate. In addition, if composed of a flammable substance (such as flour), it can be an explosion hazard.\n\nFor more info on dust, visit:\nhttp://en.wikipedia.org/wiki/Dust