Little attention has been given to the changing role of the state in the me
diation of environmental risk. This review paper examines three interrelate
d themes: first, the extent to which contemporary environmental risks diffe
r from those of the past; second, the various ways in which the rationality
and legitimacy of environmental regulation have been challenged by a combi
nation of political and economic developments; and third, the dilemmas pose
d by different institutional strategies for risk management. The paper argu
es that in order to better understand the implications of environmental ris
k for regulatory institutions it is necessary to develop our conception of
risk beyond narrowly conceived technical, technological and micro-political
discourses. (C) 1998 Elsevier Science Ltd. All rights reserved.