Superconductivity and its Applications are at the heart of major advances in modern science and technology. In this conversation, Amalia Ballarino, Senior Scientist and Project Leader “Cold Powering” for the High-Luminosity LHC, and Gianni Grasso, CTO of ASG Superconductors, explain in simple terms the principles and real-world impact of superconductivity. Interviewed by Paola Catapano, science communicator at CERN.