Achieving a cleaner environment by ecological design - a natural approach towards sustainability.

Apart from Government's legislations and regulations, standards and guidelines, administration and publicity, ecological design [1-3] is a necessary approach to a clean environment. The fundamental rationale is to minimize the detrimental impact on our ecological environment. The study illustrates urban design and city planning are one of the "tools" and approaches to achieving the goal of a cleaner air quality, energy conservation and good, natural ventilation.