The document discusses the concept of sustainable development and the influential 1987 Brundtland Commission report. It notes that sustainable development meets present needs without compromising future generations' ability to meet their needs. It emphasizes helping the world's poor and respecting environmental limitations. Subsequent UN conferences further developed sustainable development principles. The National Green Tribunal applies sustainable development, precautionary, and polluter pays principles in its decisions. In 2012, the UN set 17 Sustainable Development Goals to address urgent economic, social and environmental challenges.