Countries as geographically diverse as Honduras, Jordan, and Pakistan are experiencing a common challenge—rapid growth in urban populations as conflict and climate-induced disasters push people from rural areas into cities. This report examines the effects of this increased urban migration on both the migrants and the urban environment, as well as the challenges policymakers face. It offers recommendations to help meet the needs of growing urban populations and develop adaptive, resilient systems to better withstand the impacts of climate change and conflict.