Sunday, June 10, 2007

Rachel Carsen's Lethal Legacy, Again

The New York Times has a fascinating piece in its Science section today regarding the human toll of banning DDT.

Key Sections

On her sciencific methods:

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.


Regarding mankind's impact on nature and vice versa:

Dr. Baldwin led a committee at the National Academy of Sciences studying the impact of pesticides on wildlife. (Yes, scientists were worrying about pesticide dangers long before “Silent Spring.”) In his review, he praised Ms. Carsons’s literary skills and her desire to protect nature. But, he wrote, “Mankind has been engaged in the process of upsetting the balance of nature since the dawn of civilization.”

While Ms. Carson imagined life in harmony before DDT, Dr. Baldwin saw that civilization depended on farmers and doctors fighting “an unrelenting war” against insects, parasites and disease. He complained that “Silent Spring” was not a scientific balancing of costs and benefits but rather a “prosecuting attorney’s impassioned plea for action.”

Ms. Carson presented DDT as a dangerous human carcinogen, but Dr. Baldwin said the question was open and noted that most scientists “feel that the danger of damage is slight.” He acknowledged that pesticides were sometimes badly misused, but he also quoted an adage: “There are no harmless chemicals, only harmless use of chemicals.”

Ms. Carson, though, considered new chemicals to be inherently different. “For the first time in the history of the world,” she wrote, “every human being is now subjected to contact with dangerous chemicals, from the moment of conception until death.”

She briefly acknowledged that nature manufactured its own carcinogens, but she said they were “few in number and they belong to that ancient array of forces to which life has been accustomed from the beginning.” The new pesticides, by contrast, were “elixirs of death,” dangerous even in tiny quantities because humans had evolved “no protection” against them and there was “no ‘safe’ dose.”

Dr. Baldwin led a committee at the National Academy of Sciences studying the impact of pesticides on wildlife. (Yes, scientists were worrying about pesticide dangers long before “Silent Spring.”) In his review, he praised Ms. Carsons’s literary skills and her desire to protect nature. But, he wrote, “Mankind has been engaged in the process of upsetting the balance of nature since the dawn of civilization.”

While Ms. Carson imagined life in harmony before DDT, Dr. Baldwin saw that civilization depended on farmers and doctors fighting “an unrelenting war” against insects, parasites and disease. He complained that “Silent Spring” was not a scientific balancing of costs and benefits but rather a “prosecuting attorney’s impassioned plea for action.”

Ms. Carson presented DDT as a dangerous human carcinogen, but Dr. Baldwin said the question was open and noted that most scientists “feel that the danger of damage is slight.” He acknowledged that pesticides were sometimes badly misused, but he also quoted an adage: “There are no harmless chemicals, only harmless use of chemicals.”

Ms. Carson, though, considered new chemicals to be inherently different. “For the first time in the history of the world,” she wrote, “every human being is now subjected to contact with dangerous chemicals, from the moment of conception until death.”

She briefly acknowledged that nature manufactured its own carcinogens, but she said they were “few in number and they belong to that ancient array of forces to which life has been accustomed from the beginning.” The new pesticides, by contrast, were “elixirs of death,” dangerous even in tiny quantities because humans had evolved “no protection” against them and there was “no ‘safe’ dose.”


Silent Spring and the DDT ban were a triumph for emotionalism over science. And I dought that this example is cited in Al Gore's new book.

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Friday, May 25, 2007

Rachel Carson's Lethal Legacy

Tomorrow millions of people will celebrate the 100th birthday of one of the most lethal human beings in history. No, I’m not talking about neo-Nazis recalling Adolph Hitler’s birth. And, I’m not taking about nostalgic communists reminiscing about Lenin, Stalin, Pol Pot, Fidel Castro, Che Guevara or Mao Zedong - although all certainly rank among the most murderous despots of the 20th century.
No, Sunday will be dawn with environmentalists lighting candles and reciting poetry in remembrance of Rachel Carson, author of “Silent Spring.” Silent Spring described a supposedly steep decline in bird populations she attributed to the excessive application of the most effective insecticide man has ever invented, DDT.
Dichloro-Diphenyl-Trichloroethane, otherwise known as DDT, was deadly to bugs but harmless to humans. DDT was an essential tool for the eradication of malaria from North America and Europe. Malaria was well on its way to becoming an historical footnote worldwide before its use was effectively banned with more inflexibly than any of the “thou shalt nots” found in the 10 Commandments. Recently fear mongering environmentalists have raised the specter of malaria spreading into the North America as consequence of global warming. In truth, before it was eradicated with DDT, malaria was common in the United States centuries before the first SUV hauled kids to soccer games. If and when malaria creeps back up the Mississippi River, environmentalists will have more to answer for than Big Oil.
Silent Spring became the bible for the modern environmental movement and made Rachel Carson the messiah for uncompromising environmental fundamentalism. The religious fervor of the modern environmentalism has stifled progress that would actually make the earth cleaner and its people healthier. Environmental inflexibility prohibits self-defending genetically modified crops from being sown and actually forces farmers to use more pesticides than they otherwise would have to. The only tangible result of r-BST free milk is a higher price. We belch far more carbon into the atmosphere because of environmental fundamentalists’ reflexive opposition to building nuclear power plants.
In noting her upcoming birthday anniversary, The Washington Post earlier this week admitted that “numerous” deaths were directly attributed to the DDT ban and Rachel Carson’s prose. Numerous is a delicate choice of words considering that by the time you finish reading this column, several children will have died unnecessarily from malaria, a disease that was nearly eradicated before DDT was banned. In sub-Saharan Africa, children under the age of 5 years perish unnecessarily from malaria at the rate of about one every 30 seconds. According to the Centers for Disease Control, nearly a million children under the age of five succumb to malaria annually. Indirectly, malaria kills far more than that. The number one risk factor for premature death around the world is poverty. And malaria imposes a monstrous economic burden on sub-Saharan Africa as even its survivors are left too weak to work.
Without DDT, high tech solutions have turned to genetically modified mosquitoes that out-compete native species, but do not transmit malaria. In addition, the US Army has been investigating novel vaccine regimens. The highly evolved biology of the malarial plasmodium parasite permits it to evade immune defenses and so far frustrated traditional vaccine strategies.
But we should not throw up our hands in frustration until we can relax DDT restrictions or come up with biotech solutions to malaria. There is something we can do today to help. Nothing But Nets is a mission of the United Methodist Church, the National Basketball Association, Sports Illustrated magazine, The Mark J. Gordon Foundation, Major League Soccer, and the Bill and Melinda Gates Foundation. Nothing But Nets purchases insecticide-treated bed nets and distributes them in malaria-afflicted areas of the world.
While HIV/AIDS gains the greatest media and political attention, malaria kills far more people worldwide. And while most HIV is still transmitted the old-fashioned way, through promiscuous unprotected sex, malaria is contracted during unprotected sleep. A net for a child will greatly improve that child’s chances of growing into a healthy adult.
You can learn more about this worthy campaign by navigating your browser to http://www.nothingbutnets.net. There you will learn what you can do to help fight this dreaded disease. Every minute you hesitate means that two more children will die.
And, if you are among those shedding tears for Rachel Carson tomorrow, you bear the greatest moral burden to help out.

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