A grand challenge is the impact that climate will have on business and society. Much discourse, rightly so, has focused on how business might become more sustainable. This class focuses on climate impacts on society. By understanding climate impacts on society, global business leaders might better understand the tradeoffs between private and social costs. This course is designed for students that will make decisions at firms, advise clients, or make investment decisions for impact, private equity or philanthropic investments who will want to assess climate impacts on human populations. Such leaders need to have a framework to analyze potential impacts and costs of programs, policies and investments that may mitigate or help populations adapt to climate change. The course will help students analyze the returns to climate programs and investments to understand what works, why, and for whom. We will then apply the mitigation and adaptation frameworks to cases including natural disasters, water, migration, health, and food security. Cases will be analyzed from the perspective of firms, governments, international organizations and communities to better understand when these stakeholders will (or won't) have incentives to invest to mitigate or facilitate adaptation to climate impacts on human populations.