Word: alkyl
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Dates: during 1960-1969
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...From that experience came a valuable lesson in public health: disease can be transmitted by polluted water. In the years since, along with his progress in sanitation and health, man has picked up new ways of polluting his environment. The new, more subtle contaminants bear such exotic names as alkyl benzene solfonate and acrolein, and they differ in one major respect from the contaminants of a century and a half ago. They are man-made-the undesirable byproducts of technological progress...