There is a growing demand to channel collective energy towards justice and equity in health, and to better understand the social processes that influence health and health systems. Just published, Participatory Action Research in Health Systems: a methods reader, by Rene Loewenson et al aims to promote understanding of PAR and provide information on its paradigms, methods, application and use in health policy and systems. As a tool to support understanding and learning, the reader uses explanatory text backed by references and resources. It includes examples of participatory action research across high, medium and low income settings and across all regions globally. Download for free.