When one decides to devote their life to becoming a monk, they are choosing to abstain from a lot of the most enjoyable things in life. Meet two Buddhist monks who made that decision, find out what drove them to it and how is has affected their life and relationships since.
Neil Oliver visits Reichskrone, the Imperial Crown of the Holy Roman Empire, in Vienna and discusses how Cnut the Great's attendance of the Holy Roman Emperor's coronation marks Viking culture becoming European.
As Truman comes to accept the secret Sylvia revealed, he tests the limits of what he can get away with and tries to escape Seahaven. Producers rush to explain the strange incidents to keep the truth hidden from Truman.
Alan Davies and Marcus du Sautoy visit the UK's National Physical Laboratory, where Mark Oxborrow takes them through an experiment that demonstrates how prime numbers exist in nature, and the Riemann hypothesis.