Nick Spencer examines the historical relationship between science and religion.
Writer Amit Chaudhuri explores the idea of exile and modern, secular homelessness.
Professor Rosie Campbell asks how we can make judgements about politicians' authenticity.
Aleks Krotoski asks what it means to be authentic in a digital world full of filters.
Melvyn Bragg and guests discuss what it means to be oneself
Phill Jupitus explores the importance of being bored.
Conflicts, big and small - what do they have in common? Evan Davis and guests discuss.
Giles Fraser wonders what lies behind our urge to fill our days with noise and excitement.
Will Self asks some of Britain's key opinion-makers about the nature of our existence.
Josie Long presents a programme about nothing.
Josie Long hears stories which come out of nowhere.
Joan Bakewell discusses belief with novelist Salley Vickers.
Does nothing exist? Our scientific duo consider the nature of nothing.
How zero was discovered and why it allows us to forecast the future.
Robert McCrum and his guests look at how to avoid writing 'the bits that readers skip'.
Melvyn Bragg and guests discuss what makes us human.