Review: Precautionary Politics: Principle and Practice in Confronting Environmental Risk By Kerry H Whiteside Reviewed by Elery Hamilton-Smith Charles Sturt University, Australia Kerry H Whiteside. Precautionary Politics: Principle and Practice in Confronting Environmental Risk. MIT Press, Cambridge, MA 2006. 182 pp. ISBN 978-0-262-23255-5 73179-9(pbk); US $20.00. In order to protect the environment, the precautionary approach shall be widely applied by States according to their capabilities. Where there are threats of serious or irreversible damage, lack of full scientific certainty shall not be used as a reason for postponing cost-effective measures to prevent environmental degradation (Rio Declaration, 1992: 15). Those responsible for composing the now famous Rio Declaration on Environment and Development no doubt tried to be absolutely clear and unambiguous. They quite obviously did not see the extent to which the very ideas and words of this precautionary principle would prove to be the Trojan Horse of ambiguity. In due course, as the horse opened up to discharge its content, an evolving and costly political war was declared. Before entering into discussion of that war, it is worth noting that the precautionary principle has long held a place in human thought. Aristotle (Nicomachean Ethics, 1142:3) spoke of phronesis (practical wisdom) as “the science of what is just, fine and good for a human being” not as a branch of knowledge, but as quality in understanding and deliberation. Coming closer to the present day, the 19 th century German legal system recognised it in Vorsorgeprinzip. In the 1890s, it was invoked in Britain with regard to issues in public health. But it emerged in its present form at the 1972 Stockholm Conference and was formally identified as a principle at Rio in 1992. Since that time it has been strongly supported, particularly by environmentalists and the public health field and at the same time strongly criticized by various industries and governments. It has been more fully developed by the UN Convention on Climate Change, another on Prevention of Marine Pollution and the Cartagena Protocol developed under the auspices of the Convention on Biological Diversity. It has been adopted by the European Community, by the International Union for the Conservation of Nature and is now recognised in environmental law. But the debates over it have produced an immense body of journalism and professional publications. It is fair to say that the built-in ambiguities and great diversity of responses to it made it a vital issue in political debates, both within any one country and internationally. The largest confrontation is that over the use of genetically modified food crops, and Whiteside has used this as the central case study of his book. Since 1996, the efforts of the United States to export genetically modified (transgenic) crops to Europe have been blocked or delayed by the European community’s adherence to the precautionary principle. Specifically, this was “. . . not because the technology has been proven harmful, but because of uncertainties about its potential.” Some European governments eventually approved the entry of some plants, but even when Electronic Green Journal , Issue 26, Spring 2008 ISSN: 1076-7975