Not so long ago there was almost no philosophy on what is today’s most urgent political issue – global warming. Now there’s a burgeoning philosophical literature in the area. Climate change raises a range of moral questions. Who’s responsible for the situation we’re now in? How should we live, to avoid making things even worse? And what obligations, if any, do we have to future generations? James Garvey works at the Royal Institute of Philosophy and is author of a book on the ethics of climate change. Produced by Ethics Bites, Open University/BBC. Part of 14-part podcast on ethics.