HEALTH AND WELLNESS

The world is years away from stamping out bird flu in poultry, and the threat of a human pandemic will remain until it does, the head of the World Health Organization (WHO) said.

The cafeteria lunch line at Columbus Elementary School moves quickly as students grab portions of carrots celery, apples and oranges. French fries and hamburgers, once cafeteria staples, aren't even offered.

Altruism, one of the most difficult human behaviors to define, can be detected in brain scans, U.S. researchers reported on Sunday.

Losartan, a widely used blood-pressure drug, reduced muscle damage in mice with the most common form of muscular dystrophy, researchers at Johns Hopkins report.

Thirty years after it began as just another quirky movement in Berkeley, Calif., the push to ban smoking in restaurants, bars and other public places has reached a national milestone.