A deep look into the inner workings of the body.

Includes:

AIDS: Life After Death

Thirty years after HIV/AIDS was first identified - after it decimated gay communities across the country - a new generation comes of age in its long shadow.

The Race against Time

How far can we push ourselves? What happens when we reach our extreme limit? What is the threshold of our physical abilities? Exercise Physiologist Dr. Greg Wells and Psychologist Dr. Kate Hays examine the role our brain plays in endurance events.