What Killed Dr. Atkins, and What Keeps the Issue Alive?

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ImClone's Cancer Drug (Erbitux) Is Back, and U.S. Approval Is Expected

U.N. Official in Warning on Afghan Drugs

Federal Panel Hears Testimony on Vaccinations and Autism

E.P.A. Raises Estimate of Babies Affected by Mercury Exposure

Drug Discount Card for Elderly May Confuse as Well as Help

Study Details 30-Year Increase in Calorie Consumption

They Come to Praise the Carb, Not Bury It

A Vaccine for Humans Clears a Hurdle as Bird Flu Expands

Experts Urge Bird Vaccination Against Flu

Human Spread, a First, Is Suspected in Bird Flu in Vietnam

As Bird Flu Spreads, Global Health Weaknesses Are Exposed

China Killing Birds

Spread of Flu Across Asia Laid to Birds That Migrate

Avian Flu Said to Be Resistant to a Main Flu-Fighting Drug

Governments Across Southeast Asia Work to Contain Bird Flu

Powder Found in Senate Leader's Office Confirmed as Poison (Ricin)