A popular obesity drug may help treat a dangerous disorder in which people struggle to breathe while they sleep, a new study finds.

LONDON (AP) - The Princess of Wales says she is "making good progress" in her cancer treatment and will attend Saturday's royal Trooping the Color ceremony, Kate's first public appearance since her diagnosis.

Scaling back treatment for three kinds of cancer can make life easier for patients without compromising outcomes, doctors reported at the world's largest cancer conference.

Daily and near-daily marijuana use is now more common than similar levels of drinking in the U.S., according to an analysis of national survey data over four decades.

CAPE CANAVERAL, Fla. (AP) - A massive cradle of baby stars has been observed in new detail by a European space telescope, adding to its celestial collection of images.

Bird flu has been detected in beef for the first time, the U.S. Department of Agriculture announced Friday, but officials said the meat from a single sickened dairy cow was not allowed to enter the nation’s food supply and beef remains safe to eat.

Extreme heat in Mexico, Central America and parts of the U.S. South has left millions of people in sweltering temperatures, strained energy grids and resulted in iconic Howler monkeys in Mexico dropping dead from trees.