REDD+ is moving ahead, but at a slower pace and in a different form than we expected when it was launched at Bali in 2007. This book takes stock of REDD+ and asks a number of questions. How has REDD+ changed, and why? How is REDD+ unfolding in national policy arenas? What does REDD+ look like on the ground? What are the main challenges in designing and implementing REDD+? And, what are the choices that need to be made to enable REDD+ to become more effective, efficient and equitable? Most of the analysis is based on a large comparative research project, the Global Comparative Study on REDD+ (GCS),.