Daniel Beysens is Honorary Director of Researches at the PMMH laboratory (Physique et Mécanique des Milieux Hétérogènes), a joint laboratory of CNRS (Centre National de la Recherche Scientifique) and ESPCI–PSL (Ecole Supérieure de Physique et Chimie Industrielle – Paris Sciences et Lettres). He is President - founder of the OPUR International Organization for Dew Utilization and was President of the European Low Gravity Research Association. His area of expertise is phase transition: In space, to improve the management of fluids, with emphasis on near and supercritical conditions, and on earth, to obtain water from air by passive radiative condensation. He started the investigation of water condensation at the Alternative Energies and Atomic Energy Commission, when he was Head of Institute. D. Beysens is Associate Editor of several scientific journals and has authored many books and scientific publications. He was awarded various prices and honors in Physics and Environmental Sciences.