In Eduard Broto's insightful new study of the issues facing new architecture, he reflects on the many different ideas proposed by contemporary architects who respond to the challenges of creating efficient and habitable high density cities, all over the world. The book features architectural and town planning proposals that are part of a comprehensive effort to tackle the demands presented by the need for sustainable development. From single buildings, mixed-use complexes and large scale works - including KPF's master plan for a new city in South Korea and Hydronet the visionary network of infrastructure proposed for underneath San Francisco - we see the level of engagement necessary to address the world-wide rise in population numbers anticipated for urban areas.