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Pakistan : Last year, about 60,000 Pakistanis died from high level of fine particulate matter in the air-

Among the highest death tolls in the world from air pollution, according to World Health Organization [WHO}.

Vehicles and Industries constitute the biggest contributors of smog forming pollutants. A lot has been written, but a lot more needs to be done about air pollution.

Air pollution is a world wide problem. A survey of  1,600 cities by the World Health Organization found  air pollution  had worsened since a similar survey in 2011.

Health officials around the world warn that air pollution is only getting worse; and just in poorer states.

SMOG is a form of air pollution, named for the mixture of smoke and fog in the air. Industrial and vehicle pollution, as well as things like incinerators and open burning, make up part of the problem.

SMOG can inflame breathing passages, decrease the lungs 'working capacity', and cause shortness of breath pain when inhaling deeply,  wheezing and coughing.

It can cause eye and nose irritation and it dries away the protective membranes of the nose and throat and interferes with the body's ability to fight infection, increasing susceptibility to illness.

Britain has long been affected by mists and fogs, but these became much more severe after the  onslaught of the Industrial Revolution in the late 1700s.

Factories belched gases and huge numbers of particles into the air, which in themselves could be poisonous. When some of the chemicals mix with water and air, they can wrench into acid which can cause-

Skin irritations, breathing problems, and even corrode buildings.  There are reports of thick smog, selling of coal tar, which blanketed London in December 1813.

Holding out for several days, people claimed you could not see from one side of the street to the other.