Michael Sandel. 2009 Reith Lecturer, discusses the moral limits of markets. You can follow Nigel Warburton discussing Sandel's first Reith lecture on Twitter on www.twitter.com/philosophybites from 10.15 p.m UK time on the 13th June as this lecture is broadcast on BBC Radio 4. Add '#goodradio' or '#Reith2009' to any comments you make on Twitter.

Philosophy Bites looks at ethical questions raised by enhancement. Technological developments have opened up many new opportunities for intervening in biological processes to improve ourselves. Allen Buchanan of Duke University discusses some of these and their implications in conversation with Nigel Warburton.

Moral psychology is the empirical study of how people make moral judgements. In this episode of the Philosophy Bites podcast Walter Sinnott-Armstrong discusses the relevance of psychological research to moral philosophy.

Pleasure is something we all want. But is it, and should it be the only thing that we want? Is pleasure all the same kind of thing? Philosopher Thomas Hurka explores the concept of pleasure in conversation with Nigel Warburton in this episode of the podcast Philosophy Bites.

This episode of the Philosophy Bites podcast focuses on Aristotle's Ethics. In conversation with Nigel Warburton, Terence Irwin of Oxford University explains the key features of this influential work.

Assisted dying, providing a patient with the means to kill themselves, is a highly controversial issue. For this episode of the Philosophy Bites podcast Raymond Tallis, who is both an eminent gerontologist and philosopher, discusses this topic and some of the moral issues surrounding it with interviewer Nigel Warburton.

Should we base our morality on our emotional reactions of disgust? We all have a sense of 'yuk' at some activities or situations. Julian Savulescu of Oxford University discusses the relevance of revulsion to our moral judgements in this episode of the Philosophy Bites podcast.

Jean-Paul Sartre's notion of Bad Faith lies at the core of his existentialist classic Being and Nothingness. In this episode of the Philosophy Bites podcast Sebastian Gardner explains what Sartre meant by Bad Faith.

Questions about the nature of reality are at the heart of all philosophy in both Western and Eastern traditions. Keith Ward gives an overview of the idealist tradition in some Indian philosophy and draws parallels between this tradition and some Western thinkers.

Scientists talk about sub-atomic particles which are invisible to the eye. Do such particles really exist? Or are they simply convenient fictions that, for the moment at least, explain the observable phenomena? David Papineau discusses and defends scientific realism in this episode of Philosophy Bites.