The notion of sustainable development was introduced by the IUCN (International Union for Conservation of Nature) in 1980 in its report The World Conservation Strategy. It is defined as "development that meets the needs of the present without compromising the ability of future generations to meet their own" (Definition proposed in 1987 by the World Commission on Environment and Development, in its report entitled Our Future for All ).



The objective of sustainable development is to find a coherent and viable long-term balance between the three economic, social and environmental aspects of human activities. The major challenge of sustainable development