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A DDT Timeline

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Brent Olson

on 2 October 2012

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Transcript of A DDT Timeline

Some thoughts on DDT (Dichloro-diphenyl-trichloroethane) 1939: Demonstrated effectiveness as an insecticide
Paul Mueller won the nobel prize for the discovery. 1874: First Synthesized US Deploys in large quantities for control of vector borne diseases such as typhus and malaria 4:30 WWII Why are organic compounds like DDT so deadly to bugs (and children, and other living things). Civilian Use At home Abroad After WWII Some vocab: Toxicity Persistence refers to the accumulation of substances, such as pesticides, or other organic chemicals in an organism Remember the difference by energy flows and nutrient cycles? What might the human chain look like? biomagnification and bioaccumuation Persistent organic pollutants (POPs) are organic compounds that are resistant to environmental degradation through chemical, biological, and photolytic processes in bugs it affects neurotransmitters, killing them in birds, it thins eggshells in humans carcinogenic endocrine disruptor a substance or agent that tends to produce a cancer (in particular, DDT leads to breast cancer substances that interfere with the synthesis, secretion, transport, binding, action, or elimination of natural hormones in the body that are responsible for development, behavior, fertility, and maintenance of homeostasis (normal cell metabolism) among other things, can lead to developmental disorders Why was Rachel Carson able to put this puzzle together? http://www.cbsnews.com/stories/2007/04/22/sunday/main2714532.shtml?tag=currentVideoInfo;videoMetaInfo an escalating war. "The control of nature is a phrase conceived in arrogance, born of the Neanderthal age of biology and philosophy, when it was supposed that nature exists for the convenience of man. The concepts and practices of applied entomology for the most part date from the stone age of science has armed itself with the most modern and terrible weapons, and that in turning them against the insects has also turned them against the earth" (page 297) "But there is also an ecology of the world within our bodies. In this unseen world minute causes produce mighty effects; the effect, moreover, is often seemingly unrelated to the cause, appearing in a part of the body remote from the area where the injury was sustained." (page 189) but not everyone agrees http://bit.ly/ddtisawesome This is a debate that is reemerging, so lets have it
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