EESA10H3 Lecture Notes - Lecture 4: Rachel Carson, Poliomyelitis, Chemical Industry
20 Mar 2019
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In 1947, time magazine carried an ad claiming ddt was good for people, homes and farms. It took 20 years before scientists realized how dangerous it was. Pest roy the most effective weapon ever wielded against insects; a ddt: once a bug comes in contact with ddt, it is absorbed through the feet and spreads throughout the insect"s entire nervous system. Ddt insecticide used to fight child paralysis: with the possibility of a serious infantile paralysis, epidemic health authorities of san. Antonio texas attacked the germ carriers throughout the city with ddt: they sprayed sections of the city with ddt to stop the spread of the dread polio mellitus, even the streams, parks. From 1945-1955, annual pesticide use on farms went from 125 million pounds to over 600 million. Public health department staged demonstrations to convince the public of ddt"s effectiveness and safety enthusiasm for the chemical.
