Book excerpt: Mobilities Facing Hydrometeorological Extreme Events 2 covers our need to understand how the interaction of hydro-meteorological, social and development dynamics combine to bring improvement to or a worsening of both mobile and immobile exposure. The book provides a summary of the interdisciplinary work done over the past ten years. Residential mobility-the way in which the occupation of flood zones evolves over time-and its resulting immobile exposure are also at the heart of this work. In addition, the book explores how climate change and its relation to fast floods in various regions of the world, especially the Mediterranean, is creating extreme events.