explores evolving definitions of media and interrogates how media technologies are transforming media theory and practice. The collection addresses the emerging roles of media across a wide range of disciplines, featuring contributions from an array of internationally known scholars and practitioners. The definition of media itself is in a constant state of flux, expanding to include an ever-widening range of concepts, products, services, and institutions. Here, the authors reconceptualize media, drawing not only on media and communication studies, but also philosophy, sociology, political science, biology, art, computer science, and information studies, among other disciplines. The collection challenges traditional notions of media, explores emerging media, and reexamines concepts including technology, environment, and ecology; multimedia, mediation, and labor; and participation, repair, and curation. These timely and original discussions by established scholars in the field provide a valuable contribution to the fusion of media across disciplines.