Sunday, June 10, 2007

Rachel Carson Says, "Ouch!" Again

Glenn Reynolds notes an understated but devastating article on Rachel Carson by John Tierney, "Fateful Voice of a Generation Still Drowns Out Real Science:"
This “Fable for Tomorrow,” as she called it, set the tone for the hodgepodge of science and junk science in the rest of the book. Nature was good; traditional agriculture was all right; modern pesticides were an unprecedented evil. It was a Disneyfied version of Eden.

Ms. Carson used dubious statistics and anecdotes (like the improbable story of a woman who instantly developed cancer after spraying her basement with DDT) to warn of a cancer epidemic that never came to pass. She rightly noted threats to some birds, like eagles and other raptors, but she wildly imagined a mass “biocide.” She warned that one of the most common American birds, the robin, was “on the verge of extinction” — an especially odd claim given the large numbers of robins recorded in Audubon bird counts before her book.

* * *

The human costs have been horrific in the poor countries where malaria returned after DDT spraying was abandoned. Malariologists have made a little headway recently in restoring this weapon against the disease, but they’ve had to fight against Ms. Carson’s disciples who still divide the world into good and bad chemicals, with DDT in their fearsome “dirty dozen.”

Ms. Carson didn’t urge an outright ban on DDT, but she tried to downplay its effectiveness against malaria and refused to acknowledge what it had accomplished. As Dr. [I.L.] Baldwin [a professor of agricultural bacteriology at the University of Wisconsin] wrote [in a 1962 review of Silent Spring], “No estimates are made of the countless lives that have been saved because of the destruction of insect vectors of disease.” He predicted correctly that people in poor countries would suffer from hunger and disease if they were denied the pesticides that had enabled wealthy nations to increase food production and eliminate scourges.

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