<P> Sustainable development is the organizing principle for meeting human development goals while at the same time sustaining the ability of natural systems to provide the natural resources and ecosystem services upon which the economy and society depend . The desired result is a state of society where living conditions and resource use continue to meet human needs without undermining the integrity and stability of the natural system . Sustainable development can be classified as development that meet the needs of the present without compromising the ability of future generations . </P> <P> While the modern concept of sustainable development is derived mostly from the 1987 Brundtland Report, it is also rooted in earlier ideas about sustainable forest management and twentieth century environmental concerns . As the concept developed, it has shifted to focus more on economic development, social development and environmental protection for future generations . It has been suggested that "the term' sustainability' should be viewed as humanity's target goal of human - ecosystem equilibrium (homeostasis), while' sustainable development' refers to the holistic approach and temporal processes that lead us to the end point of sustainability". The modern economies are endeavouring to reconcile ambitious economic development and obligations of preserving the natural resources and ecosystem, the two are traditionally seen as of conflicting nature . Instead of holding climate change commitments and other sustainability measures as a drug to economic development, turning and leveraging them into market opportunities will do greater good . The economic development brought by such organized principles and practices in an economy is called Managed Sustainable Development (MSD). </P> <P> The concept of sustainable development has been--and still is--subject to criticism . What, exactly, is to be sustained in sustainable development? It has been argued that there is no such thing as a sustainable use of a non-renewable resource, since any positive rate of exploitation will eventually lead to the exhaustion of earth's finite stock . </P>

When did the concept of sustainable development come into existence