Howard Tumber is Professor in the Department of Journalism at City, University of London, UK. He is a founder and co-editor of Journalism: Theory, Practice and Criticism. He has published widely in the field of the sociology of media and journalism.

Silvio Waisbord is Professor in the School of Media and Public Affairs at George Washington University, USA. He was the editor-in-chief of the Journal of Communication, and he has published widely about news, politics and social change.