Scientists have engineered mice to live 20 percent longer, and they say the discovery might someday help humans do the same.

Scientists in London say they have successfully grown specialized lung cells from embryonic stem cells, a potential step toward lab-grown replacement lungs and tissue.

Harvard scientists say they have found a way to turn ordinary skin cells into what appear to be embryonic stem cells.

Sunbathers often feel a "buzz" after a long day at the beach. But scientists say this natural high can be fatally addictive.

With the world nearly defenseless against a possible bird flu pandemic, a new study evaluates ways of containing an outbreak.

Call it the Lie Diet: Scientists say fake memories of bad experiences with bad food can help steer eaters off the road to obesity.

Beta-blocking drugs used to treat high blood pressure may also dampen the emotional toll of traumatic memories, researchers say.

Some drugs used to treat Parkinson's disease can cause patients to become addicted to gambling, food, and sex, new research shows.

Nearly nine feet long (2.7 meters) and as big as a grizzly bear, a huge catfish caught in northern Thailand may be the largest freshwater fish ever recorded.

As the medical marijuana debate smolders on, scientists are revealing how cannabis and cannabis-derived chemicals benefit the severely ill.

Toxic venoms produced by cone snails are yielding potent new drugs to treat chronic pain, epilepsy, and other ailments.

Scientists have found that the hormone oxytocin, when sniffed, makes people more prone to trust others to look after their money.

Gay men respond differently than straight men when exposed to a suspected sexual stimulus found in male sweat, scientists say.

It's possible that a cancer cure awaits discovery in a rain forest plant. Scientist John Richard Stepp thinks the same can be said for weeds.

In ancient Babylonia pomegranate was considered an agent of resurrection. Now there is scientific evidence for the fruit's restorative powers.