What is sustainable urban design & architecture?

When we talk about Sustainable Urban Design & Infrastructure, what exactly does that mean?

Breaking down the phrase into its separate components, let me explain what the whole concept of Sustainable Urban Design & Infrastructure, and also the overarching concept behind this website.

Sustainable – pertaining to a system that maintains its own viability byusing techniques that allow for continual reuse.

Urban – characteristic of, or accustomed to cities

Design – here there is a specific reference to eco-design where architectural elements are deliberately managed to incorporate or encourage environmentally-friendly practices.

Infrastructure – again here, with a specific reference to environmental concerns, the engineering and construction of built environments are deliberately considered and structured so as to have an environmentally-friendly purpose or use that will reduce the ecological footprint.