Word: ddt
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Dates: during 1970-1979
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...physicist and one of the method's inventors, says that the process can be used in medium-sized cities and would cost householders about $3.50 per month more than they are now paying for fresh water. If necessary, tasty additives could be introduced. Presumably, a dash of DDT and a cup of raw sewage would bring the clean water to present U.S. standards...
Roxanne O'Connell reports that 10,000 pelican chicks won't be born this year because pelican eggs are collapsing and killing the embryos. The mothers ingested DDT which upset their calcium metabolism. That caused them to lay thin-shelled eggs that could not support their weight. Pelican eggs collapsed in the rookeries all the way from Anacapa to Mexico. The pelican, the osprey, the cormorant, the petrel, the seagull, the American Bald Eagle and the peregrine falcon: all of their eggs are collapsing, the shells are too thin. ?o new generations are being born...
Zero Tolerance. Two recent decisions by the U.S. Court of Appeals for the District of Columbia promise to unsnarl these problems. The court ordered Secretary of Agriculture Clifford M. Hardin to stop all interstate shipments of DDT within 30 days or else show the court why such an absolute ban would be a mistake. In the other case, the court ordered Health, Education and Welfare Secretary Robert H. Finch to publish in the Federal Register a proposal to establish "zero tolerance" levels for DDT residues in foods for humans. In effect, this will force manufacturers to prove to HEW that...
Charles Halpern, one of three Washington lawyers handling the cases, adds: "The decisions offer a precedent for getting other hard pesticides off the market." Alternatives to DDT include nonpersistent pesticides, which break down faster in nature, and biological controls using insect predators to prey on pests...
Meantime, home gardeners face the growing problem of what to do with unwanted stocks of hard pesticides-not only DDT but also DDD, dieldrin, aldrin, endrin, chlordane, heptachlor and others. Such long-lived chemicals could not be safely buried; they would sooner or later get into the water supply. Nor could they be incinerated; the dangerous fumes would carry a considerable distance. In fact, the most sensible solution, says...