Climate change and human inhabitant issues are of global concern. In modern cities, urban heat island effect and pollutant generation raise the general public concerns about sustainable living environment. The deteriorating situation and the feasible solutions can be specific to Hong Kong, a city well-known of its high-density and high-rise built environment. Though the key issues and solution approach are in no way the same as in the neighbouring cities, many practical experiences can be shared amongst intellectuals. Targets to reduce carbon emissions that affect everyone have been set in most developed countries. Green building becomes fashionable and the younger generation like to know more about it. This GE course provides a platform for the students of different colleges to come together, and to discover and explore green building through an introduction of common practices and contemporary R&D activities, so as to trigger their innovative thoughts on future developments. The course will be delivered through lectures, tutorials, site visits, and group projects.