7 pagesInternational audienceFood security is inextricably dependent both on the availability and on the access to natural resources necessary for food production (land, water, seeds and others). The availability of these resources is in turn inevitably linked to the capacity of the Earth to produce food, and thus to the maintenance of the Earth's life-support systems. However, the maintenance of this capacity and of the systems on which it depends is clearly endangered by human activities and by the current forms of using natural resources