QI XL: Nature and Nurturism

Extended edition. Comedian, novelist and presenter David Baddiel, comedian, actress and writer Cariad Lloyd and stand-up comedian and actor Ross Noble join regular panellist Alan Davies and host Sandi Toksvig to contemplate questions and facts on the theme of nature and nurture. As usual, correctness and even intelligence go out of the window in this quiz, in which the questions are so difficult to crack that points are instead awarded for the answers deemed most interesting