Comprising specially selected papers, this book refers to all aspects of urban environment and provides solutions that lead towards sustainability. These research studies include contributions that have been made from a diverse range of researchers, resulting in a variety of topics and experiences.Urban areas face a number of challenges related to reducing pollution, improving main transportation and infrastructure systems and these challenges can contribute to the development of social and economic imbalances and require the development of new solutions. The challenge is to manage human activities, pursuing welfare and prosperity in the urban environment, whilst considering the relationships between the parts and their connections with the living world. The dynamics of its networks (flows of energy matter, people, goods, information andother resources) are fundamental for an understanding of the evolving nature of today¿s cities.Large cities represent a productive ground for architects, engineers, city planners, social and political scientists able to conceive new ideas and time them according to technological advances and human requirements. The multidisciplinary components of urban planning, the challenges presented by the increasing size of cities, the amount of resources required and the complexity of modern society are all addressed.