IUCN
The International Union for Conservation of Nature
The International Union for Conservation of Nature is a membership union composed of both government and civil society organizations, providing knowledge and tools to enable human progress, economic development and nature conservation.
IUCN is a unique membership union, bringing together over 1,400 government and civil society organizations, and supported by a network of over 18,000 experts. It is not owned in a traditional corporate sense but governed by its members.