The cultural evolution of your face

We use our faces more than any other part of our body to communicate with others and that communication has evolved a lot over the centuries. Fay Bound-Alberti founded the Centre for Technology and the Body at King’s College London where she leads Interface, a project examining technologies of the face. She joins host Krys Boyd to discuss how facial understanding is tied to where and when people live, what happens when someone is “face blind,” and why the Mona Lisa’s smile is still so beguiling. Her book is “The Face: A Cultural History.”