Air pollution

https://www.wikidata.org/wiki/Q131123

Field Hierarchy

Parent
Biology 35.7M papers	Chemistry 29.1M papers	Organic chemistry 13.1M papers	Ecology 8M papers
Current
Air pollution 106k papers
Child
Air pollutants 20.7k papers	Atmospheric dispersion modeling 8,283 papers	Emission inventory 6,436 papers	Aerodynamic diameter 4,023 papers
Clean Air Act 3,826 papers	CMAQ 2,410 papers	Criteria air contaminants 2,335 papers	Particulate pollution 1,862 papers
Air Pollution Index 1,176 papers		National Ambient Air Quality Standards 1,133 papers

Trends

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History