The Natural Step Framework is a creative approach for addressing Environmental challenges based on consensus and systems thinking. Its purpose is to develop and share a common framework comprised of scientifically-based principles that can serve as a compass to guide society toward a just and sustainable future. The framework holds that in a sustainable society, nature won"t be subject to systematically increasing:
_ Concentrations of substances extracted from the earth"s crust;
_ Concentration of substances produced by society;
_ Degradation by physical means; and in that society
_ Human needs are met worldwide.