Advancing nanomaterials safety testing was the mission of two European Union-funded Horizon2020 projects, NanoReg2 and GRACIOUS. They brought together 120 nanotechnology specialists from Europe, North America and Asia at the Organisation for Economic Co-operation and Development (OECD) in Paris on September 12-13. Experts from research, industry, regulation and policy worked to improve how safety information can be more effectively obtained, supporting faster growth in nanomaterials development…….