Book excerpt: The 21st century seems to be on the move, perhaps even more so than the last. With cheap travel, and more than two billion cars projected worldwide for 2030. And yet, all this mobility is happening incredibly unevenly, at different paces and intensities, with varying impacts and consequences to the extent that life on the move might be actually quite difficult to sustain environmentally, socially and ethically. As a result 'mobility' has become a keyword of the social sciences; delineating a new domain of concepts, approaches, methodologies and techniques which seek to understand the character and quality of these trends. This Handbook explores and critically evaluates the debates, approaches, controversies and methodologies, inherent to this rapidly expanding discipline. It brings together leading specialists from range of backgrounds and geographical regions to provide an authoritative and comprehensive overview of this field, conveying cutting edge research in an accessible way whilst giving detailed grounding in the evolution of past debates on mobilities. It illustrates disciplinary trends and pathways, from migration studies and transport history to communications research, featuring methodological innovations and developments and conceptual histories - from feminist theory to tourist studies. It explores the dominant figures of mobility, from children to soldiers and the mobility impaired; the disparate materialities of mobility such as flows of water and waste to the vectors of viruses; key infrastructures such as logistics systems to the informal services of megacity slums, and the important mobility events around which our world turns; from going on vacation to the commute, to the catastrophic disruption of mobility systems. The text is forward-thinking, projecting the future of mobilities as they might be lived, transformed and studied, and possibly, brought to an end. International in focus, the book transcends disciplinary and national boundaries to explore mobilities as they are understood from different perspectives, different fields, countries and standpoints. This is an invaluable resource for all those with an interest in mobility across disciplinary boundaries and areas of study.