#air_pollution__airpollution  pollution of the air; "air pollution reduced the visibility"
  supertype:  pollution  undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities
  subtype:  acid_rain__acid_precipitation  rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water
  subtype:  industrial_pollution  pollution resulting from an industrial plant discharging pollutants into the air
  subtype:  miasma  unhealthy vapors rising from the ground or other sources; "the miasma of the marshes"; "a miasma of cigar smoke"
  subtype:  smog__smogginess  air pollution by a mixture of smoke and fog

No statement uses or specializes air_pollution; click here to add one.