This books reflects about the use of participatory action research for social change; a methodology that is more a way of working that allows a diversity of groups and social actors to better understand the complexity and changing nature of the reality they live in, as well as being a process for enabling change. In a time of globalization, climate change, and constant change; active learning and action research are tools that social groupings can use for confronting such problems. The reflections contained in this book are based on years of experience using the participatory action research methodology in diverse rural regions of Mexico and other countries in collaboration with those groups that have been subject to different types of marginalisation and exclusion but that have taken action to change their situation.