Suzanne H. Crowhurst Lennard, Ph.D.(Arch.)
To achieve green, healthy cities, the urban environment must ensure the 3 principles of sustainability:
1. Human sustainability:
That means good social and physical health for ALL – old and young, poor and well-to-do. In other words, health equity, and a special emphasis on the well-being of children
2. Economical sustainability:
That means a city economy that grows at a pace that ensures a living wage for all, and that does not enrich the few at the expense of the majority.
3. Ecological sustainability:
That means, an urban form that does not deplete the earth, that does not require vast energy resources to build and maintain, and does not cause massive pollution and climate change in the construction process.