This volume presents and reflects the development of lectures and discussions that were hold at the University of Geneva for advanced students and researchers (Third cycle of studies in biology between the following Western Switzerland universities: Bern, Fribourg, Lausanne, Neuchâtel and Genève, and with the University and International Center of Human Ecology at Geneva). The goal of this meeting was to stimulate inter-and transdisciplinary approaches on the interface between Man, Society and Environment by the application of different usely separated scientific information (exact and natural sciences, human sciences, etc). Progressively a new methodology and corpus of knowledges and concepts will emerge as what fundamental researches to do, in the perspective to a better valuation of the risks and to help the final decision in the society, concerning a general sustainable activity.