The document discusses sustainable development. It defines sustainable development as meeting present needs without compromising future generations' ability to meet their own needs. Gro Harlem Brundtland first introduced the concept in 1987 as Prime Minister of Norway. Sustainability concerns balancing equity, environmental integrity, and economic efficiency. Achieving sustainable development means simultaneously achieving social progress, environmental protection, prudent resource use, and economic growth. It requires respecting environmental limits and improving quality of life. Analyzing sustainability issues at global, regional, national and local levels is important. For sustainable development to occur, there must be cooperation, wealth redistribution, respecting nature's limits, and community self-sufficiency.