“Activities which are likely to pose a significant risk to nature shall be preceded by an exhaustive examination; their proponents shall demonstrate that expected benefits outweigh potential damage to nature, and where potential adverse effects are not fully understood, the activities should not proceed”.

Bron: World Charter for Nature, Principle no. 11, United Nations, 1982, A/RES/37/7, 48th plenary meeting, 28 October 1982, www.un.org/documents/ga/res/37/a37r007