Science communication, as a multidisciplinary field, has developed remarkably in recent years. It is now a distinct and exceedingly dynamic science that melds theoretical approaches with practical experience. Formerly well-established theoretical models now seem out of step with the social reality of the sciences, and the previously clear-cut delineations and interacting domains between cultural fields have blurred. Communicating Science in Social Contexts examines that shift, which itself depicts a profound recomposition of knowledge fields, activities and dissemination practices, and the value accorded to science and technology. Communicating Science in Social Contexts is the product of long-term effort that would not have been possible without the research and expertise of the Public Communication of Science and Technology (PCST) Network and the editors. For nearly 20 years, this informal, international network has been organizing events and forums for discussion of the public communication of science.