A radically-new form of medical education at Canada's McMaster University is receiving attention and acclaim from around the world. In Doctors of the Future, new doctors and their teachers discuss the process of educating a physician. Also, "Walking" - like a pendulum in motion is how some physicists describe this energy-efficient method of moving the human body. And. "Vortices" - they're everywhere, from the clouds to the bathtub. Vortices explores how and why a vortex is formed.