DDT

Fyrst búiğ til 1874, en ekki fyrr en 1939 sem áhrif şess á skorğdır uppgötvuğust. Notağ meğ góğum árangri síğari hluta Síğari heimstyrjaldarinnar til ağ berjast gegn malaríu. Síğan framleitt sem skorğdıraeitur fyrir almenning og salan varğ rosaleg. Bókin "Silent spring" eftir R. Carson 1962 fór yfir áhrif DDT á umhverfiğ og olli straumhvörfum.

First synthesized in 1874, DDT's insecticidal properties were not discovered until 1939, and it was used with great success in the second half of World War II to control malaria and typhus among civilians and troops. After the war, DDT was made available for use as an agricultural insecticide, and soon its production and use skyrocketed. In 1962, Silent Spring by Rachel Carson was published, in which she catalogued the environmental impacts of the indiscriminate spraying of DDT in the US and questioned the logic of releasing large amounts of chemicals into the environment without fully understanding their effects on ecology or human health. The book suggested that DDT and other pesticides may cause cancer and that their agricultural use was a threat to wildlife, particularly birds. Its publication was one of the signature events in the birth of the environmental movement, and resulted in a large public outcry that eventually led to DDT being banned in the US in 1972.


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