Angela Barthes is a professor at the University of Aix-Marseille, France, and specializes in environmental education and rural development. Catherine Cibien is director of the French committee of UNESCO’s Man and the Biosphere (MAB) Programme. Bruno Romagny is an economist and director of research at the French National Research Institute for Sustainable Development (IRD - Institut de recherche pour le développement), Laboratoire populationenvironnement-développement (LPED), France.