MEXICO CITY— A vaccine against cocaine? It's now a possibility.
Researchers in Mexico are developing a vaccine against the drug. The vaccine is not ready for human testing just yet, but it has been tested on rats.
WASHINGTON, D.C.— Is too much of a good thing bad? The U.S. government seems to think so.
The government wants the levels of fluoride in drinking water lowered, after some children are developing white spots on their teeth.