Marco Bersanelli is full professor of Astrophysics at Physics Department, University of Milano. He works in the field of observational cosmology, particularly on measurements of the Cosmic Microwave Background (CMB), the relic radiation from the early universe. He worked at Lawrence Berkeley National Laboratory, Berkeley, on ground-based observations of the CMB spectrum from the White Mountain High-Altitude Station and from the Amundsen-Scott Station at the South Pole. For the past 28 years he has played a leading role in the ESA Planck space mission, dedicated to full-sky observations of CMB anisotropy and polarization, which measured the main cosmological parameters with unprecedented accuracy. In the period 2018-2021 his group played a key role in the BeyondPlanck project, funded by the EU, aimed at developing a new analysis system of the CMB. He is currently engaged in next-generation experiments to reveal the signature of primordial gravitational waves in the polarization of the CMB, including the LSPE project and JAXA’s LiteBIRD space mission. He is author of over 300 papers in refereed astrophysics journals. He has a 20-year track record of academic teaching and young research training in physics and astrophysics, and he served as director of the PhD School in Physics at Milano University. He has published essays, books and book chapters on science and interdisciplinary topics, and he led a number of scientific exhibitions. He regularly gives outreach conferences on cosmology, astronomy, science education, and exploring the connections between science and the humanities. He is scientific director of Euresis and president of Fondazione Sacro Cuore for the education of the young people.