Pesticides Then & Now - Certified Organic Associations of BC · Pesticides Then & Now COABC...
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Pesticides Then & Now
COABC Conference 2014Feb 21-23/14Nanaimo, BC
Warren Bell MDPast Founding President
Canadian Association of Physicians for the Environment
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Spraying DDTdown a GI’sshirt in WWII
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An early DDT advertisement - 1948
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“The great expectations held for DDT have beenrealized. During 1946, exhaustive scientific tests haveshown that, when properly used, DDT kills a host ofdestructive insect pests, and is a benefactor of allhumanity.”
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From themovie “Treeof Life”
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2,4-D was co-discovered independently in both the USand the UK in 1941. The two teams involved wereTempleman and Colleagues at ICI (USA) and Nutman andCollaborators at Rothamsted Experimental Station (UK).In both cases the researchers were part of a clandestinewartime effort by their governments, to create chemicalwarfare agents for use in WWII.
When it was commercially released in 1946, 2,4-Dbecame the first successful selective herbicide
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1962
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But human healthproblems began to
show up…
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1996
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Dr. Elizabeth Guillette StudyPesticides in Mexico
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June 28/01
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2004