Michael Mosley: Wonders of the Human Body

In this episode, Michael meets tremors-sufferer Thomas who is about to undergo pioneering brain surgery, and Allen, who finds out if his experimental cancer treatment has been a success.

The presenter heads to Snowdonia, on a mission to demonstrate what stress does inside all our bodies, and in Durham, cameras reveal that we all possess an incredible hidden ability. Plus, a woman explains how she learned to see again by using echolocation.