Word: ddt
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...Africa and Asia-where a medical investment of 14? a citizen has been known to cut a country's death rate by 50%-sent rates of population increase soaring even when birth rates stayed steady. In Ceylon after World War II, the spraying of once malarial areas with DDT produced a 33% population increase (from 6.8 million to 9.1 million) within little more than a decade...
...state's victims (mostly children under ten and the aged) last week, there was little that doctors could do but keep down body temperatures. Work crews were spraying swamps with oil and DDT. To everyone in the affected areas. Health Commissioner Roscoe Kandle issued a sharp warning: stay clear of swamps and farmyards where mosquitoes or infected animals abound...
Across Dr. Heller's desk, from his far-flung research fields, flow curious and varied intelligence items-students gathering puffball mushrooms, desert rats that have learned to smoke, a drug made from a chemical relative of DDT, a plastic "iron lung'' for mice. To him, they all fit tiny corners of the vast jigsaw that must be filled in before cancer can be conquered. Meanwhile, his reports on the enemy's inroads are grim...
...males will come flocking," said a Munich researcher. "Females, of course, will continue to lay their eggs, but they will be unfertilized. The main advantage over DDT is that no resistant strains are likely to emerge. Whoever heard of a male animal becoming immune...
Researchers have been looking for an insecticide that would supplement or even replace DDT. There has been evidence that DDT is sometimes absorbed by plants and ends up in human tissues. Also, some insects have developed immunity to it. With Pa van's discovery, researchers in the U.S., Britain, Italy and Germany went to work. Last week a three-man team headed by Bonn University Chemistry Professor Friedhelm Korte, who also runs a Shell oil company laboratory in suburban Bonn, announced it had at last synthesized Iridomyrmecin. Cautioned a Shell spokesman: "We cannot say how much the new stuff...