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Project topics and materials on "Evaluation of stratosphere"

• 1. DEPLETION OF STRATOSPHERIC OZONE

  » ABSTRACT Depletion of stratospheric ozone emerged as a political concern in the early 1970s in the United States in the debate over the devel­opment of a commercial fleet of supersonic transports. In the mid 1970s it became a major political issue with regard to the use of CFCs in aerosol spray cans, and in 1978 the United States banned the nonessential use of CFCs as aerosol propellants. Efforts...Continue Reading »

  Item Type: Project Material |  50 pages |  5,303 engagements |