This lecture explores the ecological dimension of urbanization, discussing sustainability, the relationship between urban and rural areas, natural resources, risks such as the Fukushima accident, and the impact of urban structures on pandemics. It also delves into models of urban sustainability, including Sponge Cities, Green Cities, and Ecocities, with a focus on Asian cities. The instructor, Professor Paul Alice, will address these topics, along with the management of resources, ecosystems, and territorial sustainability.