IUFRO is a non-profit, non-governmental international network of forest scientists, which promotes global cooperation in forest-related research and enhances the understanding of the ecological, economic and social aspects of forests and trees. IUFRO is "the" global network for forest science cooperation. It unites more than 15,000 scientists in around 630 Member Organizations in almost 120 countries, and is a member of the International Science Council. Scientists cooperate in IUFRO on a voluntary basis.