These podcasts are devoted to selected topics in Political Philosophy, and the History and Philosophy of the Natural and Social Sciences. In the Introduction I explain that my starting point is philosophical problems, rather than, say, the history of great thinkers. Each episode of Political Philosophy deals one topical issue: The issue of Power; the notion of (Republican) Liberty and the problem of Social Justice and the contrast between Open and Closed Societies Episodes in History and Philosophy of science will deal with the notion of time, scientific revolutions and the nature of science.