From Pleasure to Sin, in Sex and the Church, Season 1, Episode 1Is a large swathe of Christianity out of step with the modern world? As society in general becomes more liberal, the Church seems more entrenched. This fascinating series explores how the religion's complex, explosive and often divisive ideas about sex, marriage and gender have their roots in an extraordinary story that began 2,000 years ago. In the first part of a major three-part series, the eminent theological historian Professor Diarmaid MacCulloch explores how Christianity has shaped western attitudes to sex, gender and sexuality throughout history.