For about fifteen years, in a scientific landscape marked by risk, research has increasingly been dealing with the topic of disasters. There are mainly two approaches : one, empirical, aims at describing and documenting situations of disasters ; the other, more theoretical one, construes disasters as entry points to analyse contemporary societies. Nevertheless, the scattering of scientific productions as well as the specificity of disaster envisioned as a topic of study are in question. Can we produce a scientific discourse about disasters' ? Is the disaster a new paradigm that competes with the paradigm of risk ? If it does, would it imply a change of our social model ? These questions, certainly legitimate, are situated at such a level of...