Landscape Architecture is concerned with the design, planning, and management of the land. It involves the physical design of sites or places with particular emphasis on resource conservation, sustainability, social responsiveness, and aesthetics. It is one of several professions concerned with both the natural and human environments, with both nature and culture, and as such, places heavy emphasis on interdisciplinary knowledge and cooperation. As an academic discipline, landscape architecture is concerned with design as an act of critical inquiry, design criticism, and issues of critical regionalism.