BONN, Germany, Jun 12 (IPS) - Prof. Helen Roy, Prof. Peter Stoett, and Prof. Anibal Pauchard – Co-Chairs of the IPBES Invasive Alien Species AssessmentNature is declining rapidly, and the rate of species extinction is accelerating. The Global Assessment Report of the Intergovernmental Science Policy Platform on Biodiversity and Ecosystem Services (IPBES) (2019) revealed that one million species are at risk of extinction. Invasive alien species, alongside climate change, changing use of sea and land, direct exploitation of organisms and pollution, are all major causes of the unprecedented and ongoing declines in biodiversity and ultimately the nature crisis that we are facing now.