Ecology: Chemical Controversy

The more chemical pesticides are put to practical use on farms and gardens, the more controversy rages about their possible hazards. The most recent acrimonious debate has focused on U.S.

rivers where fish have died in conspicuous numbers.

Are pesticides to blame? The Public Health Service said they were when 5,000,000 fish died last fall in the Mississippi Delta. After a hurried investigation and an analysis of the remains of ten dead catfish, PHS blamed the entire slaughter on endrin, an insecticide used on cotton and sugar cane in the farms around the...

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