This second edition of “Sustainable Mountain Development” is a history of the development of mountain environmental awareness from its origins during the Stockholm Conference on the Environment in 1973. This provided intellectual input into UNESCO’s MAB Programme, especially MAB-6 (Impact of Human Activities on Mountain Environments), The International Geographical Union’s commission on mountains, and The United Nations University’s (UNU) mountain project, the latter initiated in 1978. All this research and intellectual activity saw its maturation during the 1992 Earth Summit...