Book excerpt: Sustainable urbanization has moved to the forefront of political debate and policy agendas for numerous reasons. Among the most important are a growing appreciation both of the implications of rapid urbanization now occurring in China, India, and many other low and middle income countries with historically low urbanization levels and of the related challenges posed to urban areas worldwide by climate and environmental change. Conceptualizing urban sustainability for this new era, this compact book makes a clear contribution to the sustainable urbanization agenda through authoritative interventions that contextualize, assess, and explain the importance of three central characteristics of sustainable towns and cities everywhere: that they should be fair, green, and accessible.