Research shows that singing in a group has health benefits. Experts discuss how singing is being used to treat one serious disease.

The ability to "know" the musical pitch of any sound has traditionally been thought to be learnable only at a very early age through musical training. But new research shows perfect pitch is teachable to adults as well.

Air pollution is blamed for one of every eight deaths worldwide, including 200,000 in the US each year. A noted lung physician discusses some of the diseases smog can cause and ways to keep your lungs safe.

TV doctors wield tremendous influence with patients, sometimes even more than a person's own doctor. Experts discuss how celebrity doctors miss the mark and why they're so popular.

Most people don't think much about what happens to their trash after they set it at the curb. But day in and day out, refuse workers have the most dangerous municipal job, with more injuries than police or firefighters.

Many doctors believe emotion is detrimental to medical practice, and many patients think doctors are cold and emotionless. But one influential physician explains why emotion is important to doctors.

Bell's palsy is a frightening malfunction in the nerve controlling half of the face that occurs for unknown reasons. Sufferers often think they're having a stroke. Experts and two people who've had the disorder discuss.

More than 5 million children have been born as a result of in-vitro fertilization, but many are born as twins, triplets and even quadruplets. Experts discuss new technology that promises to reduce the number of multiples in IVF.

Digital technology has revolutionized many industries, but medicine has lagged behind. One of the nation's most influential doctors discusses what the consequences are and what it will take to bring health care technology to its full potential.

When AIDS first became widespread in the 1980's, it was a death sentence. A doctor who has spent her career on the front lines of HIV recounts the desperation of the early days and the transition of HIV into a treatable chronic disease.