With Jenni Murray. The government's Every Child Matters programme and the 2004 Children Act were meant to improve child protection. They were implemented after Lord Laming's report on the death of Victoria Climbié with the aim that the 'widespread organisational malaise' could not happen again. But in his follow-up report in May 2009, and following the death of Baby P, Lord Laming found that there was still a crisis in child protection and that many authorities had failed to implement his changes. So what still needs to be done to protect our most vulnerable children and how can government policy help? What is willpower? Are some of us born with more than others? And how effective is it in helping a person to give things up or change behaviour? As Lent approaches and people are talking about what to give up, Jenni discusses the elusive nature of willpower with psychologist Professor Richard Wiseman and columnist Sue Carroll. Barb Jungr is one of the world's premiere song stylists, renowned for her unique vocal style, approach to arrangements and interpretation of song. Her latest album, The Men I Love, documents her love of American popular song and its songwriters. Barb joins Jenni to discuss her career and the inspiration behind her new album, and sings live. Night-time darkness in North Korea is absolute: there is not enough electricity to light up the dark. But the darkness can be a friend to star-crossed lovers. For years, the teenage Mi-ran and her boyfriend Jun-sang took long walks under cover of darkness. Their relationship was forbidden by the strict social hierarchy of the North Korean system. This is just one of the insights into everyday life for citizens of the Democratic People's Republic of Korea in a new book, Nothing To Envy, by award-winning journalist Barbara Demick. She tells Jenni about life in this hermit state.