This document discusses the concept of sustainable development. It defines sustainable development as meeting present needs without compromising future generations' ability to meet their own needs. The document outlines several key principles of sustainable development, including satisfying basic human needs now and in the future, achieving more equitable living standards globally, preserving biodiversity and natural resources for future generations, and distributing environmental benefits equitably across populations. However, it notes there is no consensus on how to achieve sustainable development or what values and methods of implementation should be used.