Alors qu’il ne reste plus qu’une année avant la date d’échéance de la réalisation des Objectifs du Millénaire pour le développement, l’Indice de la faim dans le monde 2014 (GHI) offre une analyse multidimensionnelle de la faim et présente de nouvelles données permettant...

New physical constraints emerged in the 20th century and are changing the decision criteria used until now. Two optimisation problems are equivalent: (1) maximising discounted utility with a long-run survival constraint and (2) maximising a new type of utility that treats the present and future...

We consider here optimal use patterns for renewable resources and address the problem of optimal use of renewable resources under a variety of assumptions both about the nature of the economy in which these resources are embedded and about the objective of that economy. Although we focus here on...

Economics often provides the wrong incentives to those who control the assets, such as people in developing countries where most forests are located and who could potentially benefit most from conservation . There is increasing unease about this situation, and an emerging view is that standard...

The present acceleration of environmental destruction can be linked to the economic trading strategies that came into vogue after World War II. The theory of comparative advantages of trade, which recommends that developing countries emphasize resource exports and exports of labor-intensive...

This paper summarises some of the challenges to science that are posed by the search for sustainability. These challenges are not only technical ones, such as more affordable or reliable equipment for health care, water quality control and refrigeration. There are also fundamental empirical and...