Lead: In 1962 Rachel Carson animated the national conversation with Silent Spring, an explosive book describing the environmental havoc caused by .DDT.

Intro.: A Moment in Time with Dan Roberts.

Content: At first DDT, dichloro-diphenyl-trichloroethane, seemed a miracle. Modern agricultural practices had produced greater crop yields but had opened the way to greater infestation by pest insects. Some chemical insecticides were tried, but not until arrived in the late 1930s did there appear to be a true solution to the problem of insect control. As soon as the chemical gained USDA approval for use on plants and agricultural commodities, farmers snatched it up and crop production soared. The grayish white powdered insecticide killed nearly every insect which consumed it by interrupting respiration at the cell level. The insects literally suffocated from the inside out.