http://www.kqed.org/.stream/anon/radio/quest/2011/06/2011-06-06-quest.mp3
Pain is the most common reason for trips to the doctor's office. So it makes sense that pain treatment is a huge part of our health care system, costing more than $100 billion dollars a year. But how exactly pain works is still a mystery in many ways. As Lauren Sommer reports, some researchers are trying to understand it better by looking at a very unusual creature.