Whether we are talking about climate change, health or the economy, science is increasingly seen as a source of advice and evidence for policymakers throughout government.  But what is the relationship between science and decision-making? Where does evidence come from and who are the experts?   How are ideas converted into law, treaty and regulation and how are they implemented in within governments? These are some of the questions we consider this course. Drawing on real-life case studies, as well as the academic literature from STS and political science, we will look at how science is used in government, in parliament, at a local and international level, taking account of the many actors and processes that shape this work