Group 1 - The 2025 Public Science Day organized by the Chinese Academy of Sciences (CAS) officially launched on May 17, 2023, with the theme "Inspiring Future Journeys with Scientific Questions" [1][3] - This year's event features nearly 400 science popularization activities organized by 135 CAS units, with participation from over 6,000 researchers and volunteers [3][4] - The event includes high-interactivity online science activities and integrates various science education topics, inviting representatives from schools and scientists for roundtable discussions [3][4] Group 2 - Prominent CAS academicians participated in the event, conducting lectures and interactive sessions on various scientific topics to inspire young people to engage in scientific careers [3][4] - Several key research facilities and laboratories were opened to the public, showcasing significant scientific instruments and national key laboratories [4][5] - Special focus was placed on artificial intelligence (AI) with dedicated activities, including demonstrations of advanced AI applications in healthcare and robotics [5]

Group 1 - The 21st Public Science Day organized by the Chinese Academy of Sciences will take place from May 17 to 18, featuring the theme "Inquiring Science to Inspire Future Journeys" [1] - Nearly 400 science popularization activities will be organized by 135 affiliated units of the Chinese Academy of Sciences, with over 20 academicians conducting lectures and interactive sessions on popular scientific topics [1][9] - The event aims to inspire young people to engage in scientific careers and includes discussions on innovative practices in science education with representatives from schools and scientists [1] Group 2 - Approximately 400 research facilities will be opened to the public, allowing visitors to experience frontline scientific research, including major national research instruments and key laboratories [4] - Interactive science experiences will be available, enabling the audience to directly engage with scientific principles through experiments demonstrating physical concepts [5] Group 3 - This year's Public Science Day will feature special activities focused on artificial intelligence, showcasing its clinical applications in areas such as medical data management and non-invasive brain-machine interfaces [9] - The event has been held annually since 2005, and this year is expected to attract nearly 500,000 visitors based on registration data [9]