This is a taster for the Geography Matters podcast series. It explains why geography matters for understanding the world and how it intersects with history and with economics, politics, society and the environment. Everything happens in particular places and particular times. Geography looks at where and why and history looks at when and why. The series is presented by Chris Hamnett, emeritus professor of geography at King's College London and Klaus Dodds, professor of geopolitics at Royal Holloway College, University of London. Chris is an urban geographer interested in big cities, and Klaus is a specialist in geopolitics, with an interest in the Arctic and the polar regions and in border conflicts.