Men with osteoarthritis in the knee experience more severe pain and more loss of cartilage if they smoke.

A New Jersey woman is collecting cans of Silly String to send to soldiers in Iraq, who use the gooey substance to detect trip wires around bombs.

Vatican archaeologists have unearthed a sarcophagus believed to contain the remains of the Apostle Paul that had been buried beneath Rome's second largest basilica.

It's not clear how much of the similarity is genetic, but much of it is clearly learned, a new study suggests.

Anyone with constantly itchy skin knows about stress. Now scientists say stress might worsen or even cause common and vexing skin disorders.

Scientists confirmed today that El Nino conditions are now evident in the tropical Pacific and should intensify during the next three months, an episode that is expected to be much weaker than the very strong 1997-1998 El Nino event.