Sustainable development has become a globally accepted policy objective. It is however, increasingly recognized that the implementation of sustainability strategies has to take place at a decentralized level. This has also provoked the idea of urban sustainability. The notion of sustainable city...

This paper will identify specific planning conditions that arise when planning aims at sustainable development. First, attention will be paid to socio-ethical attitudes toward sustainability issues and to the reasons why much of the sustainability debate deserves an urban focus. Then, specific...