Our perception of the interactions between natural and human factors on environmental and social dynamics is a major concern of the scientific community at the crossing of Earth, Environmental and Social Sciences. The central question is the relative impact of natural (mainly climatic) and human processes on the evolution of ancient environments and societies, which we can now perceive with more accuracy. In order to go beyond mechanical and deterministic interpretations seeking direct causal links, and to consider on the contrary human-nature interactions in a co-evolutive perspective, it is necessary to propose finaly-tuned models adapted to the regional diversity of the geosystems and anthroposystems. This implies to mobilise heterogeneous data (climatic, palaeoenvironmental, archaeological, historical...), often incomplete, with various chronological and spatial resolutions and degrees of accuracy. Moreover, the intensity, rhythm and scale of the impacts of climatic changes and human activities on the environments and societies can differ greatly. News methods and tools allow change measurement and modelling in order to compare environmental and social dynamics, in space and time. This conference aimed to investigate these questions of nature, intensity, threshold, scale and temporality of the climatic and social impacts, key issues in the modelling of socio-environmental dynamics.
