Why the humble act of walking is actually a superpower

It's one of the defining features of a human being: walking upright on two feet. But what's largely taken for granted by many is the subject of a fascinating new book by neuroscientist Shane O'Mara, Professor of Experimental Brain Research at Trinity College Dublin. His bestseller, "In Praise of Walking", dives into the many benefits of taking a stroll. He joined us for Perspective.