Silent Spring
Language: English
Pages: 400
ISBN: 0618249060
Format: PDF / Kindle (mobi) / ePub
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‘More applications or greater quantities of the insecticides are needed then for adequate control.’ The Department does not say what wil happen when the only chemicals left untried are those that render the earth not only insectless but lifeless. But in 1959, only seven years after this advice was given, a Connecticut entomologist was quoted in the Journal of Agricultural and Food Chemistry to the effect that on at least one or two insect pests the last available new material was then being.
Partnership with other chemicals, some strike at the genetic material of the race by causing gene mutations. The herbicides, then, like the insecticides, include some very dangerous chemicals, and their careless use in the belief that they are ‘safe’ can have disastrous results. Despite the competition of a constant stream of new chemicals issuing from the laboratories, arsenic compounds are still liberally used, both as insecticides (as mentioned above) and as weed killers, where they.
Residues continue to build up in the soil, it is almost certain that we are heading for trouble. This was the consensus of a group of specialists who met at Syracuse University in 1960 to discuss the ecology of the soil. These men summed up the hazards of using ‘such potent and little understood tools’ as chemicals and radiation: ‘A few false moves on the part of man may result in destruction of soil productivity and the arthropods may well take over.’ 6. Earth’s Green Mantle WATER,.
And W.L. Bidlingmayer of the survey team]. Mollusks seemed to be unharmed by dieldrin. Crustaceans were virtually exterminated throughout the area. The entire aquatic crab population was apparently destroyed and the fiddler crabs, all but annihilated, survived temporarily only in patches of marsh evidently missed by the pellets. The larger game and food fishes succumbed most rapidly...Crabs net upon and destroyed the moribund fishes, but the next day were dead themselves. Snails continued to.
Modern world. But a very large proportion are by no means necessities of life. By their elimination the total load of carcinogens would be enormously lightened, and the threat that one in every four will develop cancer would at least be greatly mitigated. The most determined effort should be made to eliminate those carcinogens that now contaminate our food, our water supplies, and our atmosphere, because these provide the most dangerous type of contact—minute exposures, repeated over and.