Issu des travaux menés au cours des Rencontres économiques d'Aix-en-Provence de juillet 2009. Un état des lieux des problèmes que soulève la démographie mondiale, qui montre que deux paramètres joueront un rôle essentiel dans l'avenir : les ressources rares et le vieillissement....

We propose a simple equilibrium model, where the physical and the derivative markets of the commodity interact. There are three types of agents: industrial pro- cessors, inventory holders and speculators. Only the two first of them operate in the physical market. All of them, however, may...

This article questions the importance of agricultural press for the majoritarian farmers’union, the FNSEA, dealing with the question of its representativeness. At first, the authors highlight a phased trend towards press concentration to the benefit of majority union. During challenging times,...

Theoretical and methodological difficulties explain the low level of knowledge on rural employment, but political and theoretical reasons are impulsing new research. The author examines the three main logics governing present research : development, spatial distribution of employment, historical...

This article provides economic and statistical tools to analyze oil derivatives markets, and more especially the “peak” in prices recorded in July-August 2008. The main explanations of the literature are summarized, by emphasizing current trends. Overall, this article highlights a new...