Intergenerational equity and governance in sustainable development policy

Abstract
with ecological globalization, environmental degradation has become a phenomenon capable of accentuating not only the sources of spatial and temporal conflicts, but also inter-and intragenerational inequities. In this context, it seems important, first of all, to explain the ways in which the taking into account of inter-generational equity in our societies' decisions constitutes a new challenge posing unresolved questions for decisionmakers. Secondly, we see that the implementation of effective policies for sustainable development (that is, taking real account of the long-term and of equity concerns), requires the development of new perspectives and practices in science and of new "governance" institutions capable of responding to these new challenges.Thirdly, we show that these changes imply, for economic analysis and the advice that can be offered by economists, a shift from a substantive rationality perspective towards a procedural rationality. This latter encourages the development of new analysis and decision support tools based on a wider sharing of information and efforts at reconciling different perspectives in the assessment of risks and equity concerns. This new rationality will be expressed as a process of debate and dialogue taking place continuously in all phases of the policy process.