The World Migration Report 2015: Migrants and Cities, New Partnerships to Manage Mobility ─ the eighth report in IOM's World Migration Report (WMR) series ─ focuses on how migration and migrants are shaping cities and how the life of migrants is shaped by cities, their people, organizations and rules. Over 54 per cent of people across the globe were living in urban areas in 2014. The number of people living in cities will almost double to some 6.4 billion by 2050, turning much of the world into a global city. Human mobility and migration play an important part in this but are largely missing from the global debate on urbanization. Many city and local governments also still do not include migration or migrants in their urban development planning and implementation. The report aims to address this gap by considering migration as a defining factor alongside climate change, population growth, demographic change and economic crisis in shaping sustainable cities of the future.