Science Writer Dick Teresi delves into into some of the complex questions surrounding organ donation and the blurred line between life and death. The current Lord Mayor of Belfast, Ireland, talks about his city’s historic connections to the Titanic. Today’s installment of A History of the World in 100 Objects takes a look at a reliquary that houses what many believe to be a part of the crown of thorns worn by Jesus Christ. Sax player Bill Evans describes his genre-bending approach to jazz. Plus, Anthony Marx, the President of the New York Public Library, addresses some of the controversy surrounding his institution.