For years now, academics worldwide have been pushing for more interdisciplinarity and transdisciplinarity. Yet for all that, the very concept of transdisciplinarity has proved remarkably tough to define, let alone to enact. This book brings together prominent voices from the debate on transdisciplinarity in a manner that is itself transdisciplinary: scholars present papers from their own discipline, and those are followed by critical replies from different disciplines. The result is a vivid debate, new insights, and a growing confidence that there is something to be gained by approaching a topic from the outside and bringing new approaches to bear.