There is growing global consensus that strengthening the interrelations between science and policy at all levels is necessary to face the magnitude and complexity of the challenge. Over 300 delegates from about 100 countries will gather from 5 to 9 October 2009 to participate in the 2nd Ad-hoc Intergovernmental and Multi-Stakeholder Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES), hosted by the United Nations Environment Programme (UNEP). Over the course of five (…)