This course investigates the historical origins, political roles and normative power of International Organizations in global governance from an interdisciplinary perspective. Combining historical, sociological and political science approaches, the course focuses on international organizations as spaces where narratives on challenges of global governance are developed, institutionalized and diffused. In a first part, we will discuss how international issues are created and framed. In a second part, we examine which historically and culturally embedded ideas shape our international system. In a third part we reflect on the nature of IOs and their power as well as the mechanisms, processes and forms of expertise through which they establish norms, policies and practices of international governance. Last but not least the course will look at why and how IO narratives can become contested by a variety of actors in the international public sphere. These themes will be explored both through theory and a wide range of case studies, including the governance of science and technology, food security issues, human rights and labor issues.