As a part of the project on “Strengthening coordination and collaboration between biodiversity and chemicals and waste clusters” supported by the Nordic Council of Ministers, UNEP organized an expert consultation workshop with the support of UNEP-WCMC, and benefiting from the advice of the project steering committee. The main objective of the workshop was to identify challenges and opportunities in strengthening cooperation and coordination across the biodiversity and chemicals and waste clusters at all levels, with a specific focus on learning from national-level experiences.