Andrew Marr talks to the British film-maker Mike Figgis about directing Donizetti's most psychologically profound opera, Lucrezia Borgia. Professor Jocelyn Bell Burnell looks to the end of the world as the Mayans believed it, to discuss the communication of science. The businesswoman Margaret Heffernan asks how and why individuals and society as a whole choose to turn a blind eye to the uncomfortable truth. And society is also under the spotlight from the historian Edward Higgs, who champions the on-going importance of the census.

Producer: Katy Hickman.