About 80 percent of people will have back pain at some point in their lives. Sometimes a simple day or two of rest can be the perfect remedy. But, when the crippling pain just won’t go away, the answer may be surgery. This program begins with a trip to the monkeyhouse for a lesson on why we should not be surprised when a back engineered for all fours fails when its owner insists on walking upright. We see how a new technique allows scientists to measure back pain, explore a connection between karate and chiropractic, and learn when relief might come from exercise, acupuncture or yoga.