This volume is the third of an annual series, which aims to provide the reader with regularly updated assessments on the changing nature and dynamics of environmental migration throughout the world. The idea for it stemmed from the course “Environment and Migration”, taught at the Paris School of International Affairs (PSIA) of Sciences Po. The course, which is thought to be the first of its kind in the world, examines the complex relationship between environmental change and migration flows. The best of these papers have been selected and edited, and are presented in this volume. Most of them constitute the first detailed analyses of the migration flows that were induced by some of the most dramatic events of 2012, paving the way for future scholarly works.