Strategy published by the International Union for Conservation of Nature and Natural Resources (IUCN) (currently the World Conservation Union), United Nations Environment Programme (UNEP) and the World Wide Fund for Nature (WWF) in 1980 with the objectives of (a) maintaining essential ecological processes and life support systems, (b) preserving genetic diversity and (c) ensuring the sustainable utilization of species and ecosystems. An updated version entitled Caring for the Earth.