Talk:Air pollution/Archive 1

Modify the natural characteristics?
I think that the phrase


 * modify the natural characteristics

is not what air pollution means. There is a connotation of making the air noxious, smelly, discolored; causing known bad side effects like death from humans inhaling poisons; or unpleasant side effects like smog; or theoretical disastrous side effects, e.g., ozone depletion or global warming.

The word modify just doesn't work here. Ed Poor, Friday, July 12, 2002


 * Good point. "Damage the atmosphere" seems a little strong, though. Maybe a link to pollution? Vicki Rosenzweig, Saturday, July 13, 2002


 * I disagree. We can't know if the changes we are making to the atmosphere are for good. For instance, if we talk about water pollution, and i throw sugar on a river, i'm not damaging the water, i'm making it sweeter!. Maybe the sugar is harmless, maybe it's not, but i have polluted the river. Polution comes from the latin "pollere" meaning "soil" and "defile". On the other side, From The Longman Dictionary of Environmental Science, as "any harmful or undesirable change in the physical, chemical or biological quality of air, water or soil . . . ". I think there is a strong controversy here, some definitions include harm made by humans and by nature (ie: the explosion of a volcano), and some definitions accept changes to the environment that are not harmful (for instance, aesthetic changes, or ) as being non-pollution. Maybe we should put both views here. user:ChaTo Thursday, July 18, 2002.

its not the point whether we are making changes for the good or not. any change from prehistoric times is simply a change and de facto pollution of the atmosphere. we are not smart enough to judge what effect these changes will have on people and ecosystems. our job is to factually record in wikipedia what these changes or pollutants are. maybe the phrase is "materially alter the content of air". its a mouthful though and someone can come up with a better wording Anlace February 17, 2006

Hey. I disagree with ChaTo on the sugar part, when you add sugar on a river or water, there's no way you will have water again. You anticipated a product from the mixture, which is "sweet water" but not water. And yes it does damage the water because it natural flavor isn't there anymore, and sugar isn't a safe substance for human due to the fact that we do have diabetic agents within our enviroment. And to continue with the main subject, I think that air pollution is an enormous issues, and i indeed appreciate the effort done by the engineers, scientists, enviromentalists, and all those that volunteer to put an end to this matter. The French, Russians, Japonese, and many more are contributed on that behalf by operating their vehicle with water, hybrid and diesel instead of gasoline. which are steps that prove that they are working to reduce the chances for "Global warming", and many incidents to come. User:nikel81ex Tuesday, March 20, 2007

But still, what is a "natural state" of the atmosphere? When the first leaf plants began to produce oxygen (a poison from some perspective) a mass extinction followed. IMHO, pollution definitions are very atropocentric - if it harms the human body, it is a pollution. Also, pollution is not only man-made: think about a volcano, even if its natural, we call it a polluter. --Oderbolz 06:07, 29 March 2007 (UTB)

$$ Insert formula here Superscript text Strike-through text $$==Carbon dioxide== Carbondioxide is not air pollutant. CO2 is essential gas for photosynthesis. Whole life on Earth depends on that. Siim 21:18, 14 Oct 2004 (UTC)
 * True. A better example in this context would be carbon monoxide.Will McW 23:06, 26 Oct 2004 (UTC)
 * I am afraid it all depends what you mean by 'air pollutant'. There are natural sources of carbon monoxide as well as of carbon dioxide (especially natural wildfires). Ozone is also essential for life as we know it - without the ozone layer levels of ultraviolet light would be huge. However there is no doubt in most people's minds that low level ozone is a pollutant. The point about CO2 is that its levels are substantially elevated above the levels observed in recent geological time and is now believed by most scientists to be changing the climate. A good definition of air pollution is that from the state of Maine: "'Air pollution' means the presence in the outdoor atmosphere of one or more air contaminants in sufficient quantities and of such characteristics and duration as to be injurious to human, plant or animal life or to property, or which unreasonably interfere with the enjoyment of life and property throughout the State or throughout such areas of the State as shall be affected thereby." Although I would extend that to be global rather than one state and to also include indoor air pollution. Still, in the context of the article, CO is probably a better example. This is probably also relevant to the above discusion as well.--NHSavage 09:49, 8 October 1994 (UTC)

any substance can be a pollutant ...the notion is material alteration of any chemical. oxygen would be a pollutant if it became 100 percent of our air :)Anlace 14:11, 10 February 2006 [[Media:(UTC)]]

Higher atmospheric CO2 leading to ocean acidification?
I happened to hear mention about this on one or another NPR program, perhaps Science Friday, about a couple of weeks ago. I don't know how controversial it is or what the quantitative dependencies are understood to be (how much more CO2 would cause how much of a lower pH). Also, I haven't heard mention about how much ocean pH would need to lower by in order to have an effect on marine life. As I understand it, the greatest effects would be on the more primitive or "lower echelon" life forms such as coral and plankton and these would in turn affect things which feed on them, which indirectly means everything in the water. This sounds like a pretty important consequence of something happening in the atmosphere. I mention it on this talk page because it would be one effect of an increase in the level of carbon dioxide in the air and believe this would probably justify a brief mention with a link to any more relevant existing article about the ocean or ocean pollution, such as may exist. I was thinking I would add such info if/when I can find more references. Perhaps I am just not looking in the right place. If anyone else knows more about a wikipedia precedent for this feel free to pipe in. I don't want to reinvent the wheel, so to speak. -Onceler 01:59, 2 February 2006 (UTC)

Sorry about the bother! I forgot I had docked my preferences the other day to tailor my searches. I found what I was looking for: Ocean acidification. -Onceler 10:49, 2 February 2006 (UTC)


 * Hey Onceler. Feel free to pipe in. Be bold. Yes, find references, and add what they say. All we should be doing here is verifiably summarizing reliable sources using the neutral point of view. Indeed, certain kinds of water pollution may be a consequence of certain kinds of air pollution, and so it's a relevant topic. Cheers, -Will Beback 11:42, 2 February 2006 (UTC)

Primary and secondary pollutants
On a cautionary note, reference to primary and secondary pollutants does seem to be common elsewhere and as such might have had a place in the article--I base this only on a google search. As I am not familiar with them, might I ask, what are primary and secondary standards? Could both senses (re pollutants/re standards) be used if they are properly defined? -Onceler 15:55, 11 February 2006 (UTC)

As I was not aware of these terms with respect to standards myself, I'll mention this for future reference. Regarding
 * standards:
 * The EPA ranks regulations in accordance with who or what they are intended to protect as primary ("human health, including sensitive populations such as children, the elderly, and individuals suffering from respiratory disease") and secondary ("public welfare" such as "building facades, visibility, crops, and domestic animals"). This is per the article National Ambient Air Quality Standards as sourced from the EPA website. Does anyone know if these terms are based on any other more general or universal regulatory framework outside the EPA?
 * pollutants:
 * Primary and secondary had formerly been used in this article to refer respectively to pollutants which are released directly and those which form after the fact from some combination of primary pollutants and/or other substances. It would be worthwhile knowing whether there are alternate formal or more appropriate terms to indicate the same thing. 

Again, my comment is to weigh in on the relevance of primary/secondary distinctions in both senses and that there need not be confusion within the article as long as references are made clearly and appropriate caveats noted. Something like the above bullets might be worthwhile putting in the article itself. Unless more appropriate terminology is found, it would be better for this article to include and clarify multiple-sense terms which might cause confusion instead of ducking the question for the sake of convenience. -Onceler 02:04, 7 March 2006 (UTC)

USA-only photos?
Any thoughts on the USA-only photos on this page? I believe that there may be air quality issues in other nations. Thoughts? —The preceding unsigned comment was added by Hu Gadarn (talk • contribs).
 * I think this is because only people in the US have contributed photos. Do you have relevant photos from Canada? - SCEhard T 19:05, 14 April 2006 (UTC)

I have photos of: (i) marine vessel emissions; (ii) "beehive"/"tee-pee" burners; (iii) gridlock in Vancouver, BC; (iv) outdoor burning (e.g. agriculture); (v) household emissions (e.g. lawnmowers, wood stoves, smoking BBQs; (vi) degraded visibility... I didn't want to simply remove some else's photo and install my own but if there's any interest in any of these then I'll upload. Hu Gadarn (talk • contribs).
 * I'd suggest that you check out Air pollution and commons:Category:Air pollution. Upload any of your photos that you think would be useful additions (there doesn't seem to be anything covering marine vessel emissions, for example).  Even if they aren't used in this article, they'll probably be used in other articles or on other language wikipedias in the future.  After that, pick out the best photos from the group and use them to illustrate the issues covered in this article - I wouldn't worry about who added the current images since everyone's goal should be to make the best article possible. - SCEhard T 20:53, 18 April 2006 (UTC)

Donora
I've sat in on presentations where Donora-type incidents were said to have happened in New York City and in London during the 50s and 60s. —The preceding unsigned comment was added by 68.19.209.172 (talk • contribs).
 * For those people like me who had not heard of Donora see . London's equivalent was Great Smog of 1952. As for NY there is nothing mentioned in Timeline_of_New_York_City_crimes_and_disasters but I am sure smog was a problem and remains (albeit now photochemical not winter).--NHSavage 20:15, 25 April 2006 (UTC)

There is a nice summary page of summary of historical international AQ episodes & issues (e.g. 900 BC Egypt, 61 AD Rome) and another of key US AQ episodes, including St Louis, NY, Donora and LA.--Hu Gadarn

Removed text

 * These natural radon emissions can be blocked by a layer of aluminum foil under the carpet (according to the U.S. Department of Air Quality Management).

A quick check couldn't find evidence of any such department, making the entire claim somewhat dubious. -- Beland 03:19, 28 April 2006 (UTC)

Clarification requests

 * In the "Deaths" section, the phrases "many" and "linked to" are vague, and should be replaced with more concrete terms. -- Beland 03:11, 28 April 2006 (UTC)


 * The "Indoor air pollution" has a litany of things which make it sound like practically every household object is constantly emitting deadly gases. Some context should be provided about the amount of pollution generated, the amount of ventihilation needed for safe co-existence, relative risk, etc. - - Beland 03:24, 28 April 2006 (UTC)

Merge

 * Hello all. This formatting monstrosity, quite possibly a copyvio, just came up on Special:Newpages, I think its pretty clear that it should be merged here. Thoughts? Jdcooper 17:29, 11 January 2006 (UTC)


 * I agree with you on the merge. Because it's information from the EPA, it's not actually a copyvio, but it is terribly redundant and should be merged. TomTheHand 17:49, 11 January 2006 (UTC)

Air pollution is a broad term. there are several fields under air pollution. Air toxics is in itself a big field of study. There is a seperate section at USEPA office which is working on Air toxics. http://www.epa.gov/ttn/atw/index.html I am a graduate student in atmospheric sciences working on Air Quality issues at NC state university and currently working on a project to develop a full fledged course on air toxics. I think we should not not merge Air toxic in Air pollution, though we can put a link in air pollution topic.
 * In theory I would agree that air toxics could be a separate article, if it actually had content and wasn't just a copy of one of the EPA's web pages. As it stands, though, it has no original content and should be merged. TomTheHand 18:03, 11 January 2006 (UTC)
 * I don't have an opinions on the merge. As Naserke (please sign your edits :-)) is the graduate student in atmospheric sciences I am not going to argue either side, there seems to be an overlap, but if there is potential for separation then thats fine. However, the Air toxics article needs considerable formatting work done, especially wikification, its still a monstrosity! And as you pointed out TomTheHand, its not particularly useful solely as a copy of another site, it might as well just be an external link on this page if we're going to keep it like that. Basically, it just needs to be brought into line with the stern hand of Wikipedia :-) Jdcooper 18:10, 11 January 2006 (UTC)

I would have to agree with JDcooper on this one. Having the article as solely a copy of another site doesn't make sense when a simple link will do. CleanAir 15:47, 27 April 2006 (UTC)

I am new to wikipedia and don't know much about formatting and how to sign my edits. sorry for this. I am trying to learn this Naserke

I have placed external link on this page. Naserke 18:45, 11 January 2006 (UTC)
 * Ok, ace, thats good for now, but if you actually do think a distinct topic can be covered under the Air toxins article, then absolutely go for it, Be Bold! Jdcooper 04:17, 12 January 2006 (UTC)

Regarding sugestions that this article is redundant, I should mention that air pollutants and air toxics are two totally different terms. Like, ozone is an air pollutant but not air toxic. Naserke 04:18, 17 January 2006 (UTC)


 * The EPA page on "Air Toxics" refers to "toxic air pollutants", which seems to blur the distinction, and their final list of air toxins includes ozone. -Will Beback 04:32, 17 January 2006 (UTC)

Merged - such as it consisted only of a couple of EPA links. Restart the page (now a redirect) when and if there is some real content. Vsmith 04:52, 17 January 2006 (UTC)

Hey Will Beback http://www.epa.gov/ttn/atw/188polls.html  This is list of 188 air toxics listed by EPA. I couldn't find ozone in it. I will update when i will write some material on it. Till then its ok to be redirected to air pollution. Naserke 05:03, 22 January 2006 (UTC)

Air toxics should be linked to air pollution not merged. the notion of toxics is clearly separated from air pollution in general. for example CO is not a carcinogen, but radon is. air toxics is an important topic in itself and should not be redirected or merged here. Anlace 14:15, 10 February 2006 (UTC)

The term 'air pollution' is an umbrella term and encompasses a wide range of topics including both criteria pollutants such as ozone and particulates and also air toxics such as benzene. I believe criteria air pollutants are those which EPA has set national ambient air quality standards for, and air toxics do not have standards. I think the air pollution page should have an air toxics subsection with general overview and a link to a separate air toxics page which contains more detailed information. 'Same thing for criteria air pollutants'. Thomaslambert 13:48, 13 December 2006 (UTC)

Air pollution control systems
I think the wet scrubbers should not point to the more general scrubber page, but created a new page. This is because scrubbers are not only wet! The Vindictive 12:36, 17 December 2006 (UTC)


 * Feel free to create such a page, but it should have much more information than what's in the current general scrubber page to justify a split. Until then, wet scrubber (and now dry scrubber, thanks) should point to the general page. --Spiffy sperry 14:36, 18 December 2006 (UTC)

Will do so. Thanks. The Vindictive 08:47, 21 December 2006 (UTC)

The wet scrubber page is ready. Feel free to have a look at it. I don't know who included heat exchangers in the air pollution control technologies category? It should be removed. What do you think? The Vindictive 15:28, 22 December 2006 (UTC)

Adding an AQ conferences page?
Any thoughts about providing links to recurring/upcoming AQ conferencers on this page? Hu Gadarn 22:54, 29 January 2007 (UTC)

Observational Database
A large observational database of many different atmospheric constituents including radicals from a host of platforms is available. This was created as part of ESA Envisat and NASA Aura validation. It is of general use. Do you think it should be added to the article text? Dlary 03:17, 4 February 2007 (UTC)

Dispersion Modeling
It would be appropriate to move the section on dispersion modeling to a separate article.

68.216.90.16 23:26, 20 February 2007 (UTC)


 * The topic of dispersion modeling is absolutely central to Air pollution and this section must remain. As you can see there is also a substantial subarticle to carry the bulk of the material, but we need the substantive summary that is now present. Anlace 17:17, 21 February 2007 (UTC)

Image:Atlanta parking garage settled particulates.jpg
This image was removed with the rationale "these particuates are from concrete & road dirt, not air pollution." I have replaced the image. I agree the the particulates may be mostly from concrete and 'road dirt.' However, according to the article, these are in fact sources of air pollution. The point being, if the particulates arrived by air (which I assert they did), they were air pollution. - SCEhard T 18:02, 19 November 2005 (UTC)

Whether the particles are from concrete or road dirt they are > 100 microns. Unless they're under 2.5 microns, EPA doesn't consider them to be air pollution because they settle out so quickly. &mdash;The preceding unsigned comment was added by Ghosts&empties (talk • contribs).
 * I'm not entirely sure what the EPA has to do with this. Are you saying the Dust Bowl wasn't air pollution? - SCEhard T 17:22, 19 December 2005 (UTC)


 * This is not correct. Dispersion aerosols are > 2 microns. Dust from breaks and tyres are mayjor sources of PM10 (if you look at a Diesel vehicle, about 60% of its PM10 emission comes from Tyres and breaks).

--Oderbolz 06:11, 29 March 2007 (UTC)

Basically, yes. Dust storms obscure visibility, but unless the dust is respirable (0.1 - 2.5 microns) the health effects aren't particularly a concern with some exceptions (e.g. cattle in a feedlot). &mdash;The preceding unsigned comment was added by Ghosts&empties (talk • contribs).


 * Particulates are the chief form of air pollution in many communities, especially those engaged in agriculture, and can be a major health problem. I'm not sure how we know the particulates in the photo were of a certain size, but I'm sure we can find a better photo to illustrate the concept, like a dust storm or dust devil. -Willmcw 21:29, 19 December 2005 (UTC)


 * The other question is what one means by pollution. Particulates with a diameter greater than 2.5 microns may not be considered pollution by the EPA (the standard in the UK actually has an upper cut off at 10 microns) but they may still have harmful effects. Some examples of this could be the soiling caused by the particulates or the radiative effects. Many people would feel that reduced visibility itself is undesireable. Not all pollution is simply about effects on human health. I agree we might find a better picture though. I'll have a think.--NHSavage 23:22, 19 December 2005 (UTC)


 * Note: establishing PM2.5 guidelines (vs. PM10) doesn't mean that what was pollution before no longer is. The definition has only broadened. Onceler 03:03, 2 February 2006 (UTC)

Air pollution article without... pollutants???
If we have created an article about air pollution, besides the description of air pollution and the sources of air pollution, shouldn't we also have a section describing the... pollutants??? The Vindictive 17:04, 7 April 2007 (UTC)
 * Since added, apparently. -- Beland 00:06, 10 July 2007 (UTC)

Alternative spellings
Wikipedia policy regarding words that have alternative spellings is that the spelling used in the earliest chronological introduction of such words in an article shall be used in that article from then on.

Since the originator of this article used U.S. English spellings rather than British English spellings when choosing to use the words desulfurization, sulfur dioxide and sulfur in creating this article means that U.S. English spellings are always to be retained in this article. This does not mean that either spelling is "right" or "wrong". It simply means that it is Wikipedia policy. - mbeychok 15:53, 16 September 2007 (UTC)

Night Time Air Pollution
In the two cities I have lived, I have noticed a pattern, that night time air pollution can turn dramatically worse. In common with both cities is the fact that the air pollution control authorities are 9-5 M-F employees. So, in effect the laws are enforced 9-5, with bio/chemical terrorist monitoring departments getting tons of money, but they do not look into any real changes in air quality (least they interfer with regular commerce). —Preceding unsigned comment added by 71.114.163.55 (talk) 10:25, 22 September 2007 (UTC)

Carbon dioxide again
To keep its NPOV status, carbon dioxide cannot be referred to as a pollutant since it is vital for all plant life. If I am wrong about this bit of schoolboy science, please correct me! Peterlewis (talk) 12:46, 24 November 2007 (UTC)
 * CO2 is not only vital for plants. Any moron depends on it. Still it may become a pollutant in various ways. If your cubicle is filled with CO2 you die (while your plant may hang in a bit longer). When the outdoor concentration generally rises and in consequence alters the atmosphere's radiative properties, that substance is a pollutant. This is a repetition of what was discussed on this page in 2004. Gabriel Kielland (talk) 18:27, 24 November 2007 (UTC)


 * Yes, I suppose water by the same token is also a pollutant (since you can drown in it). The term "pollutant" has thus lost any reasonable definition. The use of the term has become a political statement rather than an objective scientific term. Peterlewis (talk) 19:54, 24 November 2007 (UTC)


 * Peter, reason and logic will not prevail with those who close their minds to whatever they have decided is "the truth". Especially those who have only been on the Wikipedia about 3 months and have yet to read or learn about Wikipedia's Neutral Point of View policy (WP:NPOV) or most other policies for that matter ... such as the Wiki policy on civility (WP:Civility). Perhaps that is why he uses phrases like "weasel worded" and "any moron".


 * You might try informing Gabriel that that Frederick Seitz, past president of the National Academy of Science (USA), thinks that global warming theory is based on flawed ideas (See http://www.oism.org/pproject/s33p41.htm). In fact, he has sponsored a petition to have the United States government reject the Kyoto Protocal ... and the petition now has 19,000 signatures.


 * If he needs hard, scientific evidence that the global warming theory is flawed, ask him to read this article:
 * A.B. Robinson, N.E. Robinson and Willie Soon, "Environmental Effects of Increased Atmospheric Carbon Dioxide", Journal of American Physicians and Surgeons (2007) 12, 78-90. A copy is available online at http://www.oism.org/pproject/GWReview_OISM300.pdf


 * Keep the faith and keep trying. I thoroughly agreed with the sentence that you added to Air pollution which was deleted by Gabriel - mbeychok (talk) 07:48, 25 November 2007 (UTC)


 * Keep the faith and keep trying. What is this, religion? And Frederick Seitz as your science source, no disrespect to him, but his is rather a minority position quite at odds with active climate scientists researching the global warming problem. Vsmith (talk) 14:59, 25 November 2007 (UTC)


 * No, it isn't religion. Keep the faith is just a saying that means keep hoping, keep trying or don't give up. As for Frederick Seitz (past president of the National Academy of Science) and many others who agree with him, I thought the whole idea of democracy and NPOV was to allow the hearing of minority opinions.


 * This whole issue is about Peterlewis having added one sentence that read Other scientists recognise carbon dioxide is essential for plant life and should not be classed as a pollutant ... which was deleted by Gabriel Kieland in a rather rude manner. Peterlewis did not delete any of the content stating otherwise ... he merely pointed out that many of us simply do not agree. Is that not the very essence of the NPOV policy? Please read all of the background on this discussion. - mbeychok (talk) 18:26, 25 November 2007 (UTC)


 * The current article notes the dual role of CO2. It's not the only chemical that has a dual role - beneficial and pollutant. With CO2 it is the increasing concentration in the atmosphere that makes it a pollutant - and yes that increasing concentration may well be beneficial to plant life while producing serious problems for humanity (and polar bears...). With that Other scientists recognise carbon dioxide is essential for plant life ... he was implying that the climate scientists didn't recognize that basic truism and therefore must be blind or dumb.
 * And keep the faith means a basic religious attitude of ignore the evidence - all you gotta do is believe. Cheers, Vsmith (talk) 19:29, 25 November 2007 (UTC)

The entire sentence is a straw man argument - saying that somehow, classifying anthropogenic CO2 as a pollutant means you don't believe it is essential for life. Furthermore, the clause "other scientists recognize... that it should not be classed as a pollutant" is very POV, since it implies that "CO2 should not be classed as a pollutant" is an inarguable truth which merely needs "recognition". Obviously, if human-released CO2 alters the climate of the earth negatively, it can reasonably be classed as a pollutant, quite independent of its beneficial / necessary roles. Making this into an argument about the validity of global warming is asinine, since the fact at issue - climate scientists now class CO2 as a pollutant - is not disputed. &lt;eleland/talkedits&gt; 01:55, 26 November 2007 (UTC)


 * The statement now reads: "(CO2 ...) have recently gained recognition as pollutants by climate scientists." This is a severe understatement. The recognition is currently with every OECD government except that of USA. Sad really. Also the unsigned hard scientific evidence above is only saddening stubbornness. This article could however benefit from a paragraph on beneficial side effects of pollutants. Nitrogen fertilizes. Sulphur deposition acts to raise production in some exotic ecosystems. Gabriel Kielland (talk) 20:07, 26 November 2007 (UTC)


 * Thanks for agreeing with me that labelling CO2 as a pollutant is a political rather than scientific doctrine. What is really sad is attitudes which fail to recognise rational scepticism as the way to keep politicians in check. That and the ballot box (when we are allowed to vote). Peterlewis (talk) 20:17, 26 November 2007 (UTC)


 * Gabriel Kielland: This is a quote from your above resonse: the unsigned hard scientific evidence above is only saddening stubbornness. What unsigned response are you talking about? As far as can see, every response in this posting has been signed. You know, it is possible to respond on a Talk page without denigrating a prior response. Your inability to do so is what is really saddening stubborness. - mbeychok (talk) 20:32, 26 November 2007 (UTC)


 * My apologies to Mbeychok for not having recognized that the two references above are within his entry. Both are unrelated to this discussion. Peterlewis has however a point that air pollution is a political topic. The link between scientific recommendations and political response is not well described in the article. A rather random selection of policies are hidden under the title Air quality standards. A separate article Air quality (rather than the current redirect) would be an improvement. Also a section Air pollution. The very last section on Greenhouse effect and ocean acidification actually explains about water in relation to air pollution from CO2. This could clearly be improved upon. Gabriel Kielland 23:30, 2 December 2007 (UTC)

Review Air pollution
Hi there

I'm not an expert in this field. I merged the apparently good-faith attempt to start an article at Air Pollutions Effect on Pulmonary diseases and Children into the article because that "article" was a non-starter. I've cleaned up the section headers and refs, but I'm not sure if there is any undue weight or POV issues. I hope those who can, can run a critical eye over these contribs. Thanks. --Rifleman 82 (talk) 17:17, 1 May 2008 (UTC) what will happen if we stop polluting? we ill save nature and not kill our planet... —Preceding unsigned comment added by 69.14.156.101 (talk) 23:17, 6 May 2008 (UTC)

Errors
There is a major error in the list showing CO2 emissions in tonnes for a number of countries. These figures are way, way off. I followed the footnote back to the source, and sure enough, whoever wrote this section misunderstood the meaning of the data. The data actually show only emissions from the electric power generation sector of each of the listed countries. This needs to be fixed asap. An excellent source of data for developed countries (and some developing nations) is the website of the UNFCCC (United Nations Framework Convestion on Climate Change). (Steve S). —Preceding unsigned comment added by 24.222.127.118 (talk) 20:49, 23 March 2008 (UTC)

Note that the there is also a major error in the data showing carbon dioxide emissions per capita. All these figures are way off. For example, from UNFCCC data, US per capita emissions are well over 20 tonnes of CO2 per person. Perhaps whoever wrote this section got carbon dioxide and carbon mixed up (sometimes, CO2 emissions are given in tons of CO2, and sometimes they are given in tonnes of Carbon). In any case, someone needs to review this entire section. (Steve S.) —Preceding unsigned comment added by 24.222.127.118 (talk) 21:04, 23 March 2008 (UTC)


 * There are many charts and tables on that website. http://unfccc.int/ghg_emissions_data/items/3800.php Can you provide a link to the table you're talking about? ·:· Will Beback  ·:· 19:11, 1 April 2008 (UTC)

This part needs to be cleaned up : then language is convoluted and fails to articulate what it is attempting to say :

"2002 at least 146 million Americans were living in areas that did not failed to meet at least one of the “criteria pollutants” laid out in the 1997 National Ambient Air Quality Standards."

"that did not failed to meet" —Preceding unsigned comment added by 72.190.80.98 (talk) 21:47, 21 May 2008 (UTC)

Comprehensiveness?
I do feel pollution it its true sence is not comprehensive without due consideration to contaminations by biological agents, which, equally compromise the integrity on an environment. In mind are introductions of species outside native range resulting in adverse longterm impacts (mdouma2001@yahoo.com). —Preceding unsigned comment added by 61.152.161.241 (talk) 03:06, 21 June 2008 (UTC)

Room for improvement
This article is surprisingly light when it comes to facts and sources. Surely there are more things available? I remember seeing some shocking statistics from Katowice and Nowa Huta in Poland in the eighties. Nothing of this article shows the risks as clearly as those numbers did. I lost those sources of course. Time passes. Mlewan (talk) 12:07, 16 July 2008 (UTC)aND i SAY hi

Plagiarism of text
I found that text in the "Health effects" section of the article was directly plagiarized from an article in Science Daily (see reference footnote in section for link to article). I quoted and paraphrased a couple of sentences in that section, but I'm not able right now to check the rest of the article. It might be a good idea to check the rest of the section and article for the problem. WriterHound (talk) 23:08, 17 August 2008 (UTC)
 * Hmmm...turns out that Science Daily copied text directly from the Wikipedia article instead! It did however say something about it at the bottom of the page.
 * WriterHound (talk) 00:19, 18 August 2008 (UTC)

FEV1 verification request
I've made a quick edit to the following sentence, which contained an inaccuracy:
 * "The amount of the pollutant FEV1 was significantly lower in urban employees however lung function was decreased..."

The problem is that FEV1 is not a pollutant. FEV1 is a measure of lung function (Forced Expiratory Volume, 1 second). Lower FEV1 is a sign of decreased lung function. I've made a guess at what the sentence is supposed to say, but I do not have access to the source. If someone does have access to the source, could they please verify that the sentence matches the source? Matt Fitzpatrick (talk) 02:57, 8 September 2008 (UTC)
 * Tracked down a copy, source verification done. Matt Fitzpatrick (talk) 21:35, 3 December 2008 (UTC)

What is Air Pollution? Air is the ocean we breathe. Air supplies us with oxygen which is essential for our bodies to live. Air is 99.9% nitrogen, oxygen, water vapour and inert gases. Human activities can release substances into the air, some of which can cause problems for humans, plants and animals. There are several main types of pollution and well-known effects of pollution which are commonly discussed. These includes smog, acid rain, greenhouse effect, and "holes" in the ozone layer. Each of these problems has serious implications for our health and well-being as well as for the whole environment. One type of air pollution is the release of particles into the air from burning fuel for energy. Diesel smoke is a good example of this particulate matter. The particles are very small pieces of matter measuring about 2.5 microns or about .0001 inches. This type of pollution is sometimes referred to as "black carbon" pollution. The exhaust from burning fuels in automobiles, homes, and industries is a major source of pollution in the air. Some authorities believe that even the burning of wood and charcoal in fireplaces and barbeques can release significant quantites of soot into the air. Another type of pollution is the release of noxious gases, such as sulphur dioxide, carbon monoxide, nitrogen oxides, and chemical vapours. These can take part in further chemical reactions once they are in the atmosphere, forming smog and acid rain. Pollution also needs to be considered inside our homes, offices, and schools. Some of these pollutants can be created by indoor activities such as smoking and cooking. In the United States, we spend about 80-90% of our time inside buildings, and so our exposure to harmful indoor pollutants can be serious. It is therefore important to consider both indoor and outdoor air pollution.

How can air pollution hurt my health? Air pollution can affect our health in many ways with both short-term and long-term effects. Different groups of individuals are affected by air pollution in different ways. Some individuals are much more sensitive to pollutants than are others. Young children and elderly people often suffer more from the effects of air pollution. People with health problems such as asthma, heart and lung disease may also suffer more when the air is polluted. 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. Examples of short-term effects include irritation to the eyes, nose and throat, and upper respiratory infections such as bronchitis and pneumonia. Other symptoms can include headaches, nausea, and allergic reactions. Short-term air pollution can aggravate the medical conditions of individuals with asthma and emphysema. In the great "Smog Disaster" in London in 1952, four thousand people died in a few days due to the high concentrations of pollution. Long-term health effects can include chronic respiratory disease, lung cancer, heart disease, and even damage to the brain, nerves, liver, or kidneys. Continual exposure to air pollution affects the lungs of growing children and may aggravate or complicate medical conditions in the elderly. It is estimated that half a million people die prematurely every year in the United States as a result of smoking cigarettes. Research into the health effects of air pollution is ongoing. Medical conditions arising from air pollution can be very expensive. Healthcare costs, lost productivity in the workplace, and human welfare impacts cost billions of dollars each year. Additional information on the health effects of air pollution is available from the Natural Resources Defense Council. A short article on the health effects of ozone (a major component of smog) is available from the B.A.A.Q.M.D. Why study black carbon pollution? Black carbon pollution is the release of tiny particles into the air from burning fuel for energy. Air pollution caused by such particulates has been a major problem since the beginning of the industrial revolution and the development of the internal combustion engine. Scientific publications dealing with the analysis of soot and smoke date back as early as 1896. Mankind has become so dependent on the burning of fossil fuels (petroleum products, coal, and natural gas) that the sum total of all combustion-related emissions now constitutes a serious and widespread problem, not only to human health, but also to the entire global environment. Additional resources dealing with the problems associated with particulate pollution are available from Burning Issues. (This group has additional information at a second site.) In recent years, there has been great concern about black carbon pollution of the air in parts of Eastern Europe. Education is one important step toward correcting the problem.

Effects of air pollution

The graphs of air pollution —Preceding unsigned comment added by 221.128.193.101 (talk) 11:16, 15 September 2008 (UTC)

"the human introduction..."
The first line of this article used to read:

Air pollution is the human introduction of, chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or damages the natural environment, into the atmosphere.

I have removed the word "human" from the beginning of this sentence. I have two examples to back my reasoning:


 * 1) Volcanic ash.
 * 2) The blue haze shrouding the Blue Ridge Mountains is caused by hydrocarbons released by evergreen trees during photochemical reactions.

JHMM13 (Disc) 21:12, 23 December 2008 (UTC)

The Effects on Children section is not written in correct English
Problems bolded - I don't know how to make changes myself. I hope someone else will clean up the writing in this section.

Effects on children

Cities around the world with high exposure to air pollutants has the possibility of children living within them to develop asthma, pneumonia and other lower respiratory infections as well as a low initial birth rate. [not correct English, verb doesn't agree with subject]

Protective measures to ensure the youths health is being taken in cities such as New Delhi, India where buses now use compressed natural gas to help eliminate the “pea-soup” smog.[21] ... [youths? verb disagreement again: "protective measures ...is" is not correct]

Research by the World Health Organization shows there is the greatest concentration of particulate matter particles in countries with low economic world power and high poverty and population rates. [Not sure this is correct English. Also "particulate matter particles"? Unclear what that is.]

... The Clean Air Act was passed in 1970, however in 2002 at least 146 million Americans were living in areas that did not meet at least one of the “criteria pollutants” laid out in the 1997 National Ambient Air Quality Standards.[22] [Switches from the world/India to US Clean Air Act without saying the Clean Air Act is in the US. I think this means "meet the standards for criteria pollutants"]

Those pollutants included: ozone, particulate matter, sulfur dioxide, nitrogen dioxide, carbon monoxide, and lead. Because children are outdoors more and have higher minute ventilation they are more susceptible to the dangers of air pollution. [I have never heard the term "minute ventilation".] —Preceding unsigned comment added by 68.62.183.0 (talk) 22:45, 5 February 2009 (UTC)

teraz hinton —Preceding unsigned comment added by 208.16.20.254 (talk) 14:29, 17 March 2009 (UTC)

Use easier words please!!!!
Please use easier words, this website is for everyone, including kids —Preceding unsigned comment added by Fiddleswith (talk • contribs) 13:01, 13 March 2008 (UTC)
 * Although articles shouldn't be unnecessarily complex, Wikipedia isn't designed to be easy for kids to read. - SCEhard T 01:33, 25 March 2008 (UTC)
 * Dosn't look overly complex to me RT </B>| <font color="Black"><B>Talk</B>  09:57, 3 February 2009 (UTC)


 * The writing seems clear and concise. I see no need to dumb-down the text. The numerous hyperlinks available should help anyone understand this content, including children and the general population. Thanks, Hu Gadarn (talk) 17:28, 1 May 2009 (UTC)

Control devices
See http://noticias.notiemail.com/noticia.asp?nt=11956842&cty=200 for another control device —Preceding unsigned comment added by 81.243.185.39 (talk) 07:00, 19 August 2009 (UTC)

Carbon Dioxide
There seems to be a basic misunderstanding of NPOV here. If a claim is controversial, Wikipedia's role is not to pick a side but to fairly represent the views of both perspectives. In this case, it seems that the most common view is that carbon dioxide is a pollutant, but that a significant minority, including the Bush administration, believe that carbon dioxide is not a pollutant. As a NPOV encyclopedia, we need to reflect both sides in a balanced manner, reflecting the balance of views found in our reliable sources. A good place to start would be adding some citations. Binarybits (talk) 00:51, 26 November 2009 (UTC)
 * According to the definition it is not a POV issue. The discussion is mainly political and the real issue is on the relevance of existing air pollution legislation in the US and elsewhere. The rest is noise well covered elsewhere. Here a paragraph under Legal regulation#United States would be relevant. Gabriel Kielland (talk) 14:36, 26 November 2009 (UTC)

Add Category:Emissions reduction since Air_pollution ?
Add Category:Emissions reduction since Air_pollution ? 99.37.85.55 (talk) 18:10, 25 May 2010 (UTC)
 * Done. Thanks for the suggestion. Peter 19:11, 25 May 2010 (UTC)

Carbon Dioxide
I have reverted the prevous edit to include a counter-comment about CO2. It has been known for at least a century that CO2 is part of the respiration cycle in animals (see JS Haldane, Respiration, 1935 for example), and it is a vital part of photosynthesis in plant life. By any definition of "pollution", it cannot be regarded as a pollutant. Wikipedia must try to give a balanced neutral view, and not one dictated by political expediency.

Peterrhyslewis 08:53, 25 January 2007 (UTC)


 * There are many substances which are beneficial in some circumstances but harmful in certian places or concentrations. Ozone is helpful up in the stratosphere but unhealthy in the troposhphere. Likewise, CO2 is harmful to the climate in high concentrations, even while being a natural part of the environment in lower concentrations. That's not politics, it's science. -Will Beback · † · 02:21, 26 January 2007 (UTC)


 * The case against CO2 being harmful at 0.038% concentration is unproven. By the same argument, water can also be "harmful" snce you can drown in the liquid. Thats the science and the reality. Most people would not think of water being a pollutant, or being harmful. I do not see CO2 being classified as a "pollutant" in any of the sub-sections of the article where various national policies are discussed.Peterrhyslewis 09:40, 26 January 2007 (UTC)


 * CO2 is a greenhouse gas, not a pollutant. The Vindictive 19:01, 6 April 2007 (UTC)
 * The U.S. Supreme Court recently ruled that CO2 is a pollutant, and must be regulated by the EPA. The greenhouse effect is one negative impact which qualifies it as a pollutant rather than a neutral or beneficial byproduct. -- Beland 00:05, 10 July 2007 (UTC)


 * The US Court does not define science, it might politically be a "pollutant" so that it can be regulated. But scientifically CO2 doesn't seem to be a pollutant (It is always here and harmless) Unamed102 (talk) 16:48, 23 July 2009 (UTC)


 * Harmless? Dicklyon (talk) 17:12, 23 July 2009 (UTC)

yes it harmless,but it is a green house gas. —Preceding unsigned comment added by Abhiramreddy005 (talk • contribs) 00:37, 12 August 2010 (UTC)

Bhopal?
Why is the Union Carbide Bhopal disaster included under air pollution? While the toxic gas did disperse through the air, I think that most people wouldn't consider that pollution, or at least, any pollution was secondary to the accident. If we're to include Bhopal, then why not include the use of poison gas in World War I? To me, pollution is more of a chronic issue, while the Bhopal disaster was an acute incident. Pburka (talk) 04:08, 28 September 2010 (UTC)


 * I agree, it should go since it wasn't pollution in the typical sense. Smartse (talk) 13:54, 28 September 2010 (UTC)

Vegetation source of biogenic primary VOCs
Lest our colleagues at Conservapedia have the only word on vegetation as a source of biogenic primary VOCs ("trees cause pollution"), I've added vegetation to the list of air pollution sources in this article. Will more references be needed for this potentially controversial claim? Matt Fitzpatrick (talk) 23:47, 5 December 2010 (UTC)

Edit request from, 9 October 2011
On the 27th of september the following external link was removed. It is quite a pity as it provided a considerable amount of useful information, especially to people sensitive to air pollutants (people with allergies, young children or elderly persons) who have to travel- to the Wikipedia page and was not replaced by any better link. It is noteworthy that in some cases real time or next to real time data about local air pollution can be very difficult to find. Despite being a blog link, the linked list refers only to official governemental or local authorities sites monitoring air pollution. IAMAT which has advised travellers on health risks for 50 years is linking to that blog page. Therefore please reallow the following external link with the following title. Thank you. -	-	-
 * Air pollution monitoring data and maps links.
 * Air pollution monitoring worldwide.

De perlinghi (talk) 12:47, 9 October 2011 (UTC)


 * The link might refer to reliable sources, but is not in itself a reliable source. Furthermore, it fails to meet the requirements of the external links policy, in particular "Links normally to be avoided - Any site that does not provide a unique resource beyond what the article would contain if it became a featured article." WP:ELNO.  Chzz  ►  23:59, 13 October 2011 (UTC)

Indeed you are referring to "links NORMALLY to be avoided" which means that there are exceptions; when this link was added, Wikipedia replied that a blog link would not be normally considered EXCEPT if it linked to official governemental or public authorities websites. I presume that this is the reason why the link stayed on Wikipedia for months. I unfortunately cannot retrieve the precise wording of this Wikipedia warning. I wish I had kept a copy of it. — Preceding unsigned comment added by De perlinghi (talk • contribs) 13:02, 14 October 2011 (UTC)

Hydrofluoric Acid
Hydrofluoric Acid is an air pollutant that is more hazardous than sulphur dioxide by far. It is a component of acid rain and smog, more corrosive than sulphuric acid. also one of the most corrosive, damaging and hazardous pollutant chemicals present in significant quantities in pollution from Car exhaust to industrial sources.

It is a more relevant item in car exhaust because of the trend towards using only one of the two methods for cracking oil, an economically critical stage of oil refining. Between using sulphuric acid and hydrofluoric acid, HF is more efficient and therefore in todays world which is so economically dependant on petrol we are economically compelled to use the Hydrofluoric acid catalyst. During the cracking substitution of fluorine into the hydrocarbons occurs and then when this is combusted it produces Hydrogen-Fluoride gas.

The time has come. Wikipedia will catalyse mass consciousness.

Hydrogen Fluoride is the most deadly component of Air pollution. It was the deadly gas responsible for the famous Donora, Pennsylvania incident. Much of the emphasis on sulphuric acid and sulphur dioxide is a distraction from Hydrogen Fluoride and Hydrofluoric Acid. — Preceding unsigned comment added by 220.101.92.239 (talk) 16:19, 10 July 2012 (UTC)

Under control devices and scrubbers, the Items starting with Sulphuric Acid should include Hydrofluoric Acid as well as Acid Gases, because the Acid Gases does not include or mention HF gas and a sour gas relates to sulphur compounds. — Preceding unsigned comment added by 220.101.92.239 (talk) 16:25, 10 July 2012 (UTC)


 * As I said over at acid rain can you provide evidence for these assertions? The importance of sulphuric acid from SO2 and nitric acid from NO2 is well established in the scientific literature. While Hydrogen Fluoride is a very nasty chemical indeed, the overall importance also depends on the amount being released. Even now, SO2 and NO2 are still significant contributors to acid rain, while I have never come across any reference to HF as a widespread pollutant. Also I have to your comment Wikipedia will catalyse mass consciousness is in contradiction with some of the principals of Wikipedia. See NOT. Also on providing evidence please see:Verifiability.--NHSavage (talk) 10:52, 14 July 2012 (UTC)

Advanced Air Technologies, Inc. who provides Orion Acid Gas Scrubber Systems and discusses the typical conditions for which these scrubbers perform well and for which they have been designed; http://www.aat.cc/store.asp?pid=26841 "AAT acid gas air scrubbers are most effective when using caustic water as a reagent, but some of the more soluble gases, such as HCl or HF, are effectively scrubbed using only water."

This reference relates to the suggestion for clarification that "Under control devices and scrubbers, the Items starting with Sulphuric Acid should include Hydrofluoric Acid" — Preceding unsigned comment added by 220.101.95.33 (talk) 12:02, 21 July 2012 (UTC)

Gary W. Evans

The Built Environment and Mental Health

Journal of Urban Health:

Bulletin of the New York Academy of Medicine

Vol. 80, No. 4,

December 2003

(c) 2003 The New York Academy of Medicine


 * “It is worth brief mention that outdoor ambient pollutants have been associated with mental health outcomes.57,58”

52.	Evans GW. The psychological costs of chronic exposure to ambient air pollution. In: Isaacson RL, Jensen KF, eds. The Vulnerable Brain and Environmental Risks. New York, NY: Plenum; 1994:167–182.

53.	Rotton J, Cohn EG. Climate, weather, and crime. In: Bechtel RB, Churchman A, eds. Handbook of Environmental Psychology. 2nd ed. New York, NY: Wiley; 2002:481–498.

--Ocdnctx (talk) 19:57, 30 September 2012 (UTC)

CO2 is natural and we need it for daisies and lollipops :)
I've attempted an NPOV improvement for the description of CO2. CO2 has many chemical and physical properties, but most are beyond the scope of this article. I've cut down its description to those properties relevant to air pollution. I mentioned it's colorless, odorless, and (loosely speaking) non-toxic, because many air pollutants are classified as such on the basis of color, odor, or toxicity -- CO2 is not. I mentioned it's a greenhouse gas because it is considered a pollutant on that basis. I mentioned a few sources of CO2, both anthropogenic and biogenic. I left out the biological and industrial uses for CO2 -- this isn't the article for that. Matt Fitzpatrick (talk) 05:56, 12 December 2010 (UTC)

I moved the part. It is not really a pollutant compared with other compounds! --Fmrauch (talk) 22:32, 6 February 2013 (UTC)

Odd location for table
The table "Most Polluted World Cities by PM" seems out of place in the section on. Perhaps it belongs better in the section "Cities"? Any objection if I move it? (Checking the history, it appears that it used to sit in an overall section called Statistics, which also had some stats on . When those stats were developed into a section, the PM chart just came along for the ride.)-- SPhilbrick  T  17:20, 27 October 2011 (UTC)


 * I see what you mean about the table being out of place. "Cities" sounds like a good section for the table.  -- JTSchreiber (talk) 05:07, 3 November 2011 (UTC)

I moved it - seems now a bit better. --Fmrauch (talk) 22:36, 6 February 2013 (UTC)

Reduction efforts
Perhaps mention IC engine conversion kits ? By simply swapping the fuel, it may be possible to reduce the contaminants of the exhaust gas of the engine. KVDP (talk) 15:48, 11 September 2013 (UTC)

Outdated images
The image File:Global air pollution map.png is badly outdated and incomplete. It's a 2004 image based on 2002-2004 data, so it's nearly a decade old now. Worse yet, I was easily able to find more recent satellite imagery from the same satellite (Envisat using the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) instrument) that was more up to date. You can find a 2007 image using 2006 data that shows a fairly different picture in some parts of the map here, and that's from only about three years after the 2004 image we're currently using. The 2007 image was made six years ago, so based on the changes from the 2004 to the 2007 image, the 2007 image is likely outdated now as well. Worse yet, the image we're using now is missing any sort of key explaining what the different colors mean (which is understandable considering how badly labeled the key was on the original image, I guess). Using the 2007 image with the much more understandable key would be an improvement, but hopefully someone can find better and more recent data than that. The File:Deaths from air pollution.png image is equally outdated thus it needs an update as well. I might be able to find more recent data/images myself, but I wouldn't be able to convert it to a creative commons image, so I'm hoping someone else will take up this task. Thanks. -- Hi  Ev  14:55, 12 October 2013 (UTC)

polloshen
File:Julieanndurbin|thumbnail|polloshen

— Preceding unsigned comment added by 164.58.192.10 (talk) 13:52, 13 December 2013 (UTC)


 * Unlink link to generalized uplink page Ocdnctx (talk) 22:56, 29 December 2013 (UTC)

The "City of London" is not London
The "City of London" is the name of one (small) borough marking the extents of the medieval city. The article is actually referring to London as a whole so could say "London" or "greater London" http://en.wikipedia.org/wiki/Greater_London — Preceding unsigned comment added by 81.108.24.183 (talk) 17:57, 1 February 2014 (UTC)

4.6 million deaths ???
I would like some source about it. I searched the WHO website for a while, and couldnt get a clue about the numbers. The only reliable document I found from WHO tells that the number are rather 1.5M (indoor air pollution) + 0.9 M (outdoor air pollution) = 2.4 M This document can be read here : http://www.who.int/entity/quantifying_ehimpacts/countryprofilesebd.xls

Hephaestos le Bancal 09:07, 23 October 2007 (UTC)

Deaths due to air pollution to skyrocket: CMA

An estimated 700,000 Canadians will die prematurely over the next two decades because of illnesses caused by poor air quality, the Canadian Medical Association said in a report Wednesday.--CarrotLore (talk) 22:38, 13 August 2008 (UTC)

Air pollution kills about 7 million people worldwide every year, with more than half of the fatalities due to fumes from indoor stoves, according to a report from the World Health Organisation published on Tuesday.Mar 25, 2014

Air pollution 'kills 7 million people a year' - The Guardian www.theguardian.com/.../air-pollution-kills-7m-people-a-yea... — Preceding unsigned comment added by 164.116.126.138 (talk) 21:45, 21 May 2015 (UTC)

Formulae
Is there a policy decision to use formulae, such as CO2, rather than words -Carbon dioxide? Would words make the article more accessible?Rathfelder (talk) 16:36, 22 September 2015 (UTC)

Particulates
It is not clear what distinction, if any, is intended between particulates and aerosols.Rathfelder (talk) 16:40, 22 September 2015 (UTC)

Question about Stratospheric ozone depletion
In the lead section it says: "Stratospheric ozone depletion due to air pollution has been recognized as a threat to human health as well as to the Earth's ecosystems."

My question is whether it would be better to leave this part out, given that ozone at ground level is recognized as a pollutant. Brian Everlasting (talk) 02:21, 3 January 2016 (UTC)

Look into this section
The subsection called "Children" doesn't seem to address child health issues as they relate to air pollution, except that it ends with the word "children". This has to be changed, please. BroVic (talk) 16:50, 9 June 2016 (UTC)

External links modified
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Including disproportional affects of pollution
It has been found that there are large disparities in regards to race over the amount of pollutants one is exposed to. From the PLOS journals, it has been found that nitrogen dioxide (NO2) concentrations on average are 4.6 parts per billion (ppb), 38% higher for nonwhites than whites. The disparity of race is ~4 times greater than the NO2 concentration amounts of lower income. It is directly aimed towards communities of color, regardless of income. Although this is not quite ready to be proposed/included under Hot Spots, it is just a start to understanding how people of color are disproportionately affected by pollution.

Clark, Lara P., Dylan B. Millet, and Julian D. Marshall. "National Patterns in Environmental Injustice and Inequality: Outdoor NO2 Air Pollution in the United States." PLoS ONE 9, no. 4 (2014). Accessed April 17, 2017. doi:10.1371/journal.pone.0094431.

O pal (talk) 04:40, 18 April 2017 (UTC)

Link to Low-emission zone article
Section "Governing urban air pollution" should link to Low-emission zone especially in the context of London's attempt but also actual and proposed LEZ in other cities. LeeColleton (talk) 19:38, 2 June 2017 (UTC)

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