Steven Yearley is Professor of Sociology at the University of York; author of "Science and Sociological Practice "(Open University Press, 1984), "Science Technology and Social Change "(Unwin Hyman, 1988) and "The Green Case: A Sociology of Environmental Arguments, Issues and Politics "(Harper Collins, 1991); editor of "Deciphering Science and Technology "(with M McNeill and I Varcoe), and "Protecting the Periphery: Environmental Policy in Peripheral Regions of the European Union "(with S Baker and K Milton).