 | This 1963 photo shows a massive smog episode in New York City. (Photo: AP/Wide World Photo, EPA Journal Jan/Feb 1990.) |
| This 1963 photo shows a massive smog episode in New York City. (Photo: AP/Wide World Photo, EPA Journal Jan/Feb 1990.) |
| Low-hanging smog in California's San Gabriel Valley, 1972. (Photo by Gene Daniels, EPA. Photo and caption: National Archives.) |  |
 | Drawing by Dana Andrusiak, AMS Editorial Staff, 1968. Cover art for Glossary of Terms Frequently Used in Air Pollution (American Meteorological Society, 1968). |
| Sulphur dusting of grape vines near Fresno, California, 1972. (Photo by Gene Daniels, EPA. Photo and caption: National Archives.) |  |
 | "Fugitive smoke" escapes through the top of the building during a casting operation at the Union Carbide Ferro-Alloy plant in West Virginia, in 1975. Total plant emissions for the metallurgical furnaces and the powerhouse were reduced 97.7 percent from 1967. (Photo by Harry Schaefer, EPA. Photo and caption: National Archives.) |
| A coal barge on the Monongahela River moves past a U. S. Steel Corporation coke plant at Clairton, Pennsylvania, 1973. (Photo by John L. Alexandrowicz, EPA. Photo and caption: National Archives.) |  |
 | Air Pollution Control Department officers Mel Schreckengost and Dick Fehrenback, making routine inspection of Southern Edison Generating Plant, Long Beach, California, 1972. (Photo by Gene Daniels, EPA. Photo and caption: National Archives.) |
| A plane monitors smog over Los Angeles, 1972. (Photo by Gene Daniels, EPA. Photo and caption: National Archives.) |  |
 | This cross section of the Earth's atmosphere at sunset and earth limb (24.5S, 43.5E) displays an unusual layering believed to be caused by temperature inversions which effectively concentrate smoke, dust, and aerosols into narrow layers. The top of the stratosphere can be seen as the top of the white layer thought to contain volcanic debris. The purple layer is the troposphere containing smoke from land clearing biomass burning. (Photo and caption: NASA.) |
| Smog over the Yangtze River Valley in China, photographed by the Space Shuttle Columbia. (Photo: NASA.) |  |
 | This photo shows the industrial pollution around the Siberian city of Troitsk (54.0N, 61.0E). Troitsk is the smallest of a group of three heavy industrial cities east of the Urals, the other being Magnitogorsk and Chelyabinsk. All have been cited as being some of the worst industrial polluted cities in the CIS. Despite being the smallest of the three, Troitsk has the largest area of soot blackened snow. Respiratory diseases among the citizens are chronic. (Photo and caption: NASA.) |
| Burning grass, central California, 1972. (Photo by Gene Daniels, EPA. Photo and caption: National Archives.) |  |
 | Smoke over Lake Toba, Sumatra, Indonesia, photographed by the Space Shuttle Atlantis. Smoke from fires set to clear land for agriculture in Indonesia at one time in 1997 blanketed an area larger than the continental United States. (Photo and caption: NASA.) |
| South Polar Projection of Earth, a mosaic of several images taken by the satellite Galileo. The continents of South America, Africa, and Australia are respectively seen at the middle left, upper right, and lower right. The regularly spaced weather systems are prominent. Galileo's cameras can distinguish between ice and high stratospheric clouds, allowing scientists to study the correlation between these clouds and the growth of the ozone hole. (Photo and caption: NASA.) |  |