IFSTTAR has been dealing for many years with issues related to the environment, natural and climatic events, as well as the risks posed to property, people and infrastructure. The upsurge in climatic and natural events that are deemed to be exceptional prompts us to find innovative solutions to help to adapt to and plan for these risks, but also to take account of new forms of mobility. IFSTTAR's research topics therefore cover these themes - with a particular focus on the development of urbanised areas - and aim to reconcile the growing needs for space, mobility, supply or energy with the need to protect populations and the environment from pollution and natural or malicious threats.