The landscape of foreign aid is changing. New development actors are on the rise, from the 'emerging' economies to numerous private foundations and philanthropists. At the same time the nature of the global poverty 'problem' has also changed: most of the world's poor people no longer live in the poorest countries. Building on an academic review of research on foreign aid, Sumner and Mallet outline a new vision of the aid system - an 'Aid 2.0' - making a series of policy relevant proposals for global development cooperation in the twenty-first century.