Sources of air pollution include gases (such as ammonia, carbon monoxide, sulfur dioxide, nitrous oxides, methane and chlorofluorocarbons), particulates (both organic and inorganic), and biological molecules. Concerns about air pollution have a long and complex history. June 20, 2017 . Industry, on the other hand, generally plays a larger role in China, constituting 16–27 per cent of the PM 2.5 pollution versus 9–13 per cent in the US and Western Europe (higher figures were estimated for Central and Eastern Europe (17 per cent) and Japan (34 per cent). Air pollution occurs when harmful or excessive quantities of substances are introduced into Earth's atmosphere. Concerns about air pollution have a long and complex history. Two years later, national emissions standards for cars were set.

Abstract. An Introduction to Air Pollution – Definitions, Classifications, and History Aaron Daly and Paolo Zannetti The EnviroComp Institute, Fremont, CA (USA) daly@envirocomp.com and zannetti@envirocomp.com Abstract: Definitions and classifications used in the study of air pollution are introduced. But it wasn't until the 1970 Clean Air Act that Congress set the framework for air pollution regulation tied to public health. Air pollution and cars were first linked in the early 1950’s by a California researcher who determined that pollutants from traffic was to blame for the smoggy skies over Los Angeles. Complaints about its effects on human health and the urban environment were first voiced by the inhabitants of ancient Athens and Rome. Air pollutants are substances that, when present in the atmosphere in sufficient quantities, may adversely affect people, animals, vegetation or inanimate materials. Air pollution does not represent only ''privilege'' of the present, but its history goes back to the period before Christ.

This blog post draws on data and research discussed in our entry on Air Pollution. What the history of London’s air pollution can tell us about the future of today’s growing megacities. Reuse our work freely. Our World in Data presents the empirical evidence on global development in entries dedicated to specific topics. Concerns about air pollution have a long and complex history.

by Hannah Ritchie. Complaints about its effects on human health and the urban environment were first voiced by the inhabitants of ancient Athens and Rome. Timeline of air pollution in China (image generated by Hannah Fleckenstein) Summary of the Great Leap Forward campaign:. Toxics and GHG emissions are covered elsewhere.

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