s:730:"%T Learning while doing: Evaluating impacts of REDD+ projects %A Jagger, P. %A Atmadja, S. %A Pattanayak, S.K. %A Sills, E. %A Sunderlin, W.D. %X REDD+ projects require an impact assessment approach to estimate emissions and removals; for REDD+ to succeed we need information on this and the associated 3E+ outcomes. There are few examples of rigorous impact assessment in the conservation, avoided deforestation and payments for environmental services (PES) literature. REDD+ impact assessment could contribute tremendously to our understanding of successful environment and development policy initiatives. We will learn more rapidly and effectively by sharing evaluation designs and findings across REDD+ projects ";