Climate change is the most profound challenge facing humanity. Tackling climate change will test the limits of our collective ingenuity and grit. This course uses insights from environmental studies, international development, and the study and practice of global governance to determine avenues for response. The class works together across fields and disciplines to comprehend the nature of climate change and uncover effective entry-points for action. This is a capstone course for students in the School of International Service at American University. Our work together will range through foundational literatures and contemporary debates, and through our conversations we will take on a set of urgent and pressing questions: What is the nature of climate change? Along what paths lie the most effective responses to the world’s environmental dilemmas?