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Wednesday, October 04, 2006
John Stossel :: Townhall.com Columnist
Hooray for DDT's life-saving comeback
by John Stossel
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Who says there's never any good news? After more than 30 years and tens of millions dead -- mostly children -- the World Health Organization (WHO) has ended its ban on DDT. DDT is the most effective anti-mosquito, anti-malaria pesticide known. But thanks to the worldwide environmental movement and politically correct bureaucrats in the United States and at the United Nations, the use of this benign chemical has been discouraged in Africa and elsewhere, permitting killer mosquitoes to spread death.

I don't expect any apologies from the people who permitted this to happen. But I am thankful this nightmare is ending.

DDT was banned by President Richard Nixon's Environmental Protection Agency in the early 1970s, after Rachel Carson's book, "Silent Spring," claimed to show that DDT threatened human health as well as bird populations. But some scientists found no evidence for her claims. Even if there was danger to bird eggs, the problem was the amount of DDT used, not the chemical itself.

Huge amounts of the chemical were sprayed in America. I've watched old videos of people at picnics who just kept eating while trucks sprayed thick white clouds of DDT on top of them. Some people even ran toward the truck -- as if it was an ice-cream truck -- they were so happy to have mosquitoes repelled. Tons of DDT were sprayed on food and people. Despite this overuse, there was no surge in cancer or any other human injury.

Nevertheless, the environmental hysteria led to DDT's suppression in Africa, where its use had been dramatically reducing deaths. American foreign aid could be used to finance ineffective alternative anti-malaria methods, but not DDT. Within a short time, the mosquitoes and malaria reappeared, and deaths skyrocketed. Tens of millions of people have died in that time.

DDT advocates pointed out that the ban amounted to mass murder. But they could not move the rich white environmental dogmatists who reflexively condemn all kinds of chemicals, and presumably lost no sleep when millions of poor African children died.

But now this has changed. Last month, the WHO announced that it supports indoor spraying of DDT and other insecticides "not only in epidemic areas but also in areas with constant and high malaria transmission, including throughout Africa."

"The scientific and programmatic evidence clearly supports this reassessment," said Dr. Anarfi Asamoa-Baah, WHO assistant director-general for HIV/AIDS, TB and malaria. "DDT presents no health risk when used properly." Continued...

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About The Author
John Stossel is an award-winning news correspondent and author of Myths, Lies, and Downright Stupidity: Get Out the Shovel--Why Everything You Know is Wrong.
 
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Subject: Scientific facts are undeniable!
Dennis, it looks you are a Tim Lambert’s fan. As such you will always deny scientific evidence. Birds fed huge doses of DDT (3000 higher than usual in the environment!) didn't show eggshell thinning. Only flawed studies did -but were debunked and ordered by law to be remade.

So your magnification up the food chain is not a good example.

The two main studies that linked DDT to eggshell thinning were: a) by ames DeWitt (1958), and b) Dr. Bitman. Both were used at the DDT hearings and both were shown and proved flawed. That’s why Judge Sweeney declared DDT innocent and free of toxicity, and not a carcinogen, or a teratogen, or a mutagen. The same scientific opinion was shared by all Scientific Academies on Earth, The American Cancer Society, the WHO, etc.

When you read DeWitt’s study you actually see that quails hatched more eggs when fed DDT than those control quails not eating DDT! When the flawed Bitman study was orederd by a court to be repeated, but this time feeding the birds with the appropriate calcium levels normally found in bird’s food (Bitman was providing half the normal amount!) the birds (hen) eating DDT produced eggs with thicker eggshells.

Then, the Hawk Mountain Sanctuary logs show that hawks and bald eagles grew in population during the DDT years. They had been in the brink of extinction from the early part of the 20th century, 40 years before DDT was invented. It is history, and undeniable facts. But burying your head in the sand won’t make you any wiser.

Why DDT didn't affect commercial eggs
Simple. Because chickens aren't top predators that feed on other predators (birds and fish).

DDT works like this:
1. Bugs eat DDT-contaminated crops. Bugs get a tiny amount of DDT.
2. Small fish or birds or mammals eat several hundred bugs in their lifetime. All the DDT those bugs ate accumulates in their fat.
3. Larger fish/birds/mammals eat those fish/birds/mammals, and accumulates together all those doses.
4. Finally, a bald eagle or falcon or pelican eats those fish/birds/mammals, and gets the sum total DDT load of all the hundreds of thousands of bugs that made up the base of the food chain. And that DDT made their eggshells thin.

What does a chicken eat? Feed. Probably only the amount of DDT tht one of the small fish/birds ate. Hence not enough to thin eggshells.

Basic biology. Beats off-the-cuff uneducated guesses (sometimes called "common sense") 9 times out of 10.
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