There are many definitions of sustainable development, including this landmark one which first appeared in 1987:
"Development that meets the needs of the present without compromising the ability of future generations to meet their own needs."
Sustainable development (SD) is a pattern of growth in which resource use aims to meet human needs while preserving the environment so that these needs can be met not only in the present, but also for generations to come (sometimes taught as ELF-Environment, Local people, Future). The term was used by the Brundtland Commission which coined what has become the most often-quoted definition of sustainable development as development that "meets the needs of the present without compromising the ability of future generations to meet their own needs.
Sustainable development ties together concern for the carrying capacity of natural systems with the social challenges facing humanity. As early as the 1970s "sustainability" was employed to describe an economy "in equilibrium with basic ecological support systems. Ecologists have pointed to The Limits to Growth and presented the alternative of a "steady state economy in order to address environmental concerns.
The goal of sustainable development is to improve living standards and the quality of people’s lives, both now and for future generations. Environmental issues are an important piece of the development "puzzle."
Industrial and developing countries alike share environmental concerns. Both must strive to ensure that citizens in both cities and rural areas have clean air to breathe, safe drinking water, and adequate supplies of clean renewable energy. Agriculture and industry must make efficient and responsible use of the natural resources--land, soil, forests, rivers, oceans, mineral deposits--upon which they rely.
Sustainable Development from Ecological Perspectives
If one asks an ecologist and a security analyst to name those