TV doctors wield tremendous influence with patients, sometimes even more than a person's own doctor. Yet studies show that the advice you hear on TV is often unsupported by medical research. 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. Two experts discuss the massive job of hauling our garbage away.