The final episode of Season 1 features ethicist and philosopher Peter Singer, Ira W. DeCamp Professor of Bioethics in the University Center for Human Values at Princeton University. Often called the "world's most influential living philosopher", Peter is credited with starting the modern animal rights movement, and the concept of effective altruism. He is also known for his controversial critique of the sanctity of life ethics in bioethics.

Peter talks to us about the importance of applying logic, reason and evidence to decision-making around giving and puts forward effective altruism as the methodology to do the 'most good'.

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• What Peter is reading: Night-Gaunts and Other Tales of Suspense, by Joyce Carol Oates
  
• What Peter is listening to: Revisionist History, by Malcolm Gladwell