Is it immoral even to consider the use of torture in some circumstances? If the State is threatened, should we be prepared to shelve human rights for an end we consider worthwhile? Raimond Gaita discusses a range of arguments about torture in this episode of Philosophy Bites.

What is art? Can anything be a work of art? Derek Matravers, author of Art and Emotion, explores these questions in conversation with Nigel Warburton in this episode of Philosophy Bites (www.philosophybites.com).

Was Plato's ideal state a totalitarian one? Karl Popper, thought so, and made his case in The Open Society and Its Enemies. Melissa Lane, author of Plato's Progeny, reassesses Popper's critique of Plato in this episode of Philosophy Bites.

We often blame people for what they do or fail to do. But that implies that they were free to choose whether or not to act in the way they did. At the same time science seems to reveal prior causes of all our actions. There seems little or no room for free will. In this episode of Philosophy Bites Thomas Pink, author of Free Will: A Very Short Introduction, discusses the Free Will Problem and outlines his own approach to it.

Is it possible to be a citizen of the world while maintaining your own distinctive identity? Anthony Appiah defends the ethical position he dubs cosmopolitanism (which for him is universalism combined with a recognition and celebration of diversity) in conversation with Nigel Warburton in this episode of Philosophy Bites.

A.C. Grayling, author of a recent biography of René Descartes, explores Descartes' Cogito argument, the pivotal argument of the Meditations, in conversation with Nigel Warburton in this episode of Philosophy Bites.

Events happen in time. And time is essentially tensed: there is past, present, future. D.H. Mellor, author of Real Time (and Real Time 2) suggests otherwise. In this podcast for Philosophy Bites he explains why time isn't tensed.

If what I do has only a negligible impact on events, why should I bother doing it at all? Why not 'free ride' on other people's contributions? Richard Tuck explores these questions in this episode of Philosophy Bites.

Most philosophers who consider the movies focus on the nature of the cinematic medium. Stephen Mulhall argues for a different approach. He thinks that a film such as Bladerunner can actually be philosophy.

How can non-believers make sense of the world? How can there be morality without God? In this episode of Philosophy Bites philosopher Richard Norman explains how it is possible to lead a good life without religion.