Kamran Naim, Head of Open Science at CERN, welcomes attendees to the Open Science Fair (OSFair 2025), hosted by the CERN Open Science Office and OpenAIRE from 15 to 17 September. 353 participants from 43 countries met at CERN Science Gateway to discuss how even more scientific research can be shared freely in future. (Image: CERN) At the heart of Europe’s largest physics laboratory, the spirit of collaboration was alive once again. From 15 to 17 September, more than 350 parti