The six criteria air pollutants

Introduction References & Edit History Related Topics

Images

Thick smog obscures the downtown Los Angeles skyline, with hazy air reducing visibility over the city's densely packed buildings.

The six criteria air pollutants: Media

Images

Thick smog obscures the downtown Los Angeles skyline, with hazy air reducing visibility over the city's densely packed buildings.

Los Angeles smog

Smog over Los Angeles, 2019.

Mario Tama/Getty Images

VIEW MORE in these related Britannica articles: