Lena Sanders is Senior Researcher at the CNRS (Centre National de la Recherche Scientifique). Her academic education is in statistics and in geography (Ph.D., University of Paris 7, 1984). Her research concerns urban and regional geography, spatial analysis, spatial statistics, and modelling of complex spatial systems. She has been director of the laboratory Géographie-cités (CNRS – University Paris 1 – University Paris 7) from 2000 to 2009. She is coordinating the ANR Project TransMonDyn (Modelling the major transitions in the evolution of settlement systems in Old and New Worlds : environmental constraints, spatial interactions and social innovation in complex systems multi-scalar dynamics) which brings together geographers, archaeologists, historians, linguists, ecologists, statisticians, and computer scientists from France and US.