This report explores how environmental shocks and stresses, especially those related to climate change, can push people to leave their homes in search of œgreener pastures? ¦ or just to survive. In order to make informed decisions, policymakers and development actors need a better understanding of the linkages between environmental change, displacement and migration. This report, therefore, offers: empirical evidence from a first-time, multi-continent survey of environmental change and migration;original maps illustrating how, and where, the impacts of climate change may prompt significant displacement and migration;policy recommendations that reflect the collective thinking of key multi-lateral and research institutions, as well as nongovernmental organizations working directly with many of the world's most vulnerable populations.