The refugee crisis across Europe and the debate about immigration in the United States are stark examples of the way human migration impacts countries and international affairs around the globe. These issues have become a top priority among Green School faculty who explore migration patterns, causes and consequences of refugee flows, the nature of global diasporas, the evolution of transient communities worldwide, and the associated socio-economic issues. Their work contributes to a greater understanding of contemporary global and public affairs, as societies on every continent reckon with both the challenges and opportunities presented by the flow of refugees and migrants.