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Dawn MacKeen

Friday, Jan 19, 2001 8:30 PM UTC2001-01-19T20:30:00Zl, M j, Y g:i A T

What’s causing early puberty?

New findings point to environmental estrogens.

What's causing early puberty?

No one could taste the additive in their hamburgers or milkshakes. They couldn’t see it or smell it. And never in their worst nightmares could they guess what was lurking in their meat and dairy products. The year was 1973, the place Michigan. The contaminant was a fire retardant, laced with polybrominated biphenyls (PBB) that got accidentally mixed into cattle feed instead of a nutritional supplement. Roughly 4,000 people were exposed.

Decades after one of the largest food contamination incidents in American history, the health effects are still not known. But according to a new study, one of the scariest ramifications of the poisoning has been for girls who were exposed in utero and through breastfeeding. They started menstruating at an average of 11.6 years old — a full year earlier than others who were not as highly exposed.

This finding, the first in an ongoing study at Emory University that looks at the possible reproductive effects of the chemical exposure on women, provides one of the first clues about what happens when humans come into contact with hormone-disrupting compounds. More specifically, the study has bolstered — with rare research on human subjects — the belief of many researchers that environmental estrogens, including PBBs like this one, may be the culprit for what is believed to be an alarming trend of early sexual maturity.

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Monday, Jun 2, 2003 8:04 PM UTC2003-06-02T20:04:00Zl, M j, Y g:i A T

Bad blood in Egypt

In one of the great medical tragedies in modern history, well-meaning Egyptian authorities are believed to have infected millions of people with hepatitis C.

Bad blood in Egypt

Swaddled between two arms of the river Nile, the delta is a place where everything seems to grow. Sunflowers line roads; shallots, bulbs as big as fists, sprout from the soil. Miles and miles of canals feed thick blankets of green.

Only a few hours north of Cairo, El Tod sits off a road that shifts from dust and sand to lush patches of vegetation. Camels stand tied to posts near produce carts and butcher shops where suspended animal carcasses hang outside like potted plants. News in this village is still passed from neighbor to neighbor — and the people in each story are usually known to all.

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Thursday, Mar 15, 2001 9:00 AM UTC2001-03-15T09:00:00Zl, M j, Y g:i A T

George’s noxious revision

Bush's blatant flip-flip on carbon dioxide pollution has even some GOP stalwarts holding their noses.

George's noxious revision

President Bush’s sudden reversal of a pledge to limit carbon dioxide emissions by power plants ignited a firestorm of criticism Wednesday from Democrats, moderate Republicans, environmentalists and international leaders.

But the move was a big hit with conservatives and energy industry supporters, who had declared war against efforts to restrict the emissions, which are believed to contribute to global warming.

“The reversal seems to suggest that the uproar that this policy caused on the right was greater than Bush had anticipated,” says Jerry Taylor, director of natural resources and environmental studies at the conservative Cato Institute. “But there’s not likely to be much of a political cost. The average American probably didn’t even know that Bush had made the promise to unilaterally reduce greenhouse gas emissions.”

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Anthony York is Salon's Washington correspondent.  More Anthony York

Friday, Mar 9, 2001 8:13 PM UTC2001-03-09T20:13:00Zl, M j, Y g:i A T

Controversial cell research takes a hit

Critics of the field have a heyday as the results of one study and a lawsuit fuel their fire.

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The political debate over controversial cell research shifted significantly on Thursday when researchers announced that a study in which tissue from aborted fetuses was used to treat Parkinson’s disease proved to have disastrous results. Only hours after the findings were released, a pro-life organization filed a lawsuit against the federal government, seeking to block federal financing of embryonic stem cell research. The timing of the two events was merely coincidental, but critics of the fledging research field used the opportunity to galvanize their position, calling for an end to all experimentation with cells derived from fetal tissue and discarded embryos.

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Saturday, Mar 3, 2001 9:00 AM UTC2001-03-03T09:00:00Zl, M j, Y g:i A T

Europe’s livestock plague

As the British meat market faces yet another crisis, experts at home assess the risk of foot-and-mouth disease in the U.S.

Europe's livestock plague

As the foot-and-mouth outbreak fans across England, Scotland and Northern Ireland, European officials are imposing drastic measures to keep the disease from spreading. Dublin’s St. Patrick’s Day parade has been canceled, as have livestock shows in Spain. British travelers arriving in Portugal and those crossing the border into the Irish Republic are required to disinfect their shoes. And poor Dolly the sheep, the international pinup model for animal cloning, has been quarantined. And this is all against a backdrop of a sky clouded with the smoke from pyres on farms, where thousands of animal carcasses are being burned.

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Friday, Mar 2, 2001 8:04 PM UTC2001-03-02T20:04:00Zl, M j, Y g:i A T

Your heart has been recalled

In the brave new world of body-part implants, what happens when you get a lemon of a ticker?

Your heart has been recalled

In the months leading up to Linda Baez’s third open-heart surgery, she spent most of her days at home. Breathing was no longer easy for her; neither were simple tasks like climbing stairs. The 44-year-old mother of four constantly felt weak and exhausted. But, above all, recounts her attorney, she was worried. Two operations to replace her leaky heart valve had already failed, and even though her doctors were implanting a different artificial valve this time around, she knew that there was a good chance that she would not make it.

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