This course will examine how public international institutions use their legal instruments to address climate change. It will trace the history of the 1999 UN Framework Convention on Climate Change (UNFCCC) and its multiple successor agreements, culminating in the Paris Agreement of 2015 and its implementation. It will cover how other multilateral institutions have incorporated climate obligations into their agreements, including the Kigali Amendment to the Montreal Protocol, the UN International Civil Aviation Organization’s CORSIA agreement, and the UN International Maritime Organization’s measures for global shipping. Cross-cutting questions will include how the balances struck in the Paris Agreement informed these subsequent negotiations, how effective these agreements are, and their relevance today. The course will also consider how the global trading system (the World Trade Organization (WTO) and FTAs) is grappling with addressing climate change. It will conclude with consideration of recent climate litigation in international courts, including major advisory opinions from the International Court of Justice and others. Course requirements include active class participation, reflection papers, and a final paper. There are no prerequisites, however some familiarity with international law and/or environmental law is strongly encouraged.