- published: 15 Jan 2010
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DDT (dichlorodiphenyltrichloroethane) is a colorless, crystalline, tasteless and almost odorless organochloride known for its insecticidal properties. DDT has been formulated in almost every conceivable form, including solutions in xylene or petroleum distillates, emulsifiable concentrates, water-wettable powders, granules, aerosols, smoke candles and charges for vaporizers and lotions.
First synthesized in 1874, DDT's insecticidal action was discovered by the Swiss chemist Paul Hermann Müller in 1939. It was then used 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 its production and use duly increased. Müller was awarded the Nobel Prize in Physiology or Medicine "for his discovery of the high efficiency of DDT as a contact poison against several arthropods" in 1948.
In 1962, the book Silent Spring by American biologist Rachel Carson was published. It cataloged the environmental impacts of indiscriminate DDT spraying in the United States and questioned the logic of releasing large amounts of potentially dangerous chemicals into the environment without a sufficient understanding of their effects on ecology or human health. The book claimed that DDT and other pesticides had been shown to cause cancer and that their agricultural use was a threat to wildlife, particularly birds. Its publication was a seminal event for the environmental movement and resulted in a large public outcry that eventually led, in 1972, to a ban on the agricultural use of DDT in the United States. A worldwide ban on its agricultural use was later formalized under the Stockholm Convention on Persistent Organic Pollutants, but its limited use in disease vector control continues to this day and remains controversial, because of its effectiveness in reducing deaths due to malaria, which is countered by environmental and health concerns.
Back to the beginning
Nowhere left to go
No-one is winning
Out there is darkness
Shadows all go home
The trees are all bowing their heads
A blank landscape face me
South stands the cross
South stands the cross
Sunset leaves the sky
The night closes in
It's time we were home
A beam of light passes
Through my mind
Then I see
A nothing landscape faces me
South stands the cross
South stands the cross
South stands
South stands
South stands the cross
South stands
South stands
South stands the cross
In our old positions
Starting once again
This time we might win
South stands the cross
South stands the cross
South stands the cross