Juan F. Prieto holds a PhD in geodesy and geomatics (Universidad Politécnica de Madrid, Spain). Since 2000, he has been teaching in the technical engineering programs in the School of Surveying, Geodesy, and Cartography Engineering (UPM). His research is developed within the framework of geodesy and geomatics, and its application to the shape and dimensions of the Earth, to natural risks (earthquakes, volcanoes, terrain instabilities), and anthropogenics, using terrestrial and space techniques, and data processing. His research also involves the development of national GNSS geodetic networks in general (Europe, Asia, and Africa), as well as of crustal displacements and gravity variations fields in volcanic and seismic areas (Spain). All these works are fundamental tools for studying the situations of volcanic crisis, or the crustal properties of the Earth and the mantle in general. Concerning geodetic monitoring, he has jointly applied new observational and data processing methodologies in Radar Synthetic Aperture Interferometry (InSAR), gravimetry and GNSS, in collaboration with other Spanish national and international research groups. He has participated in more than 50 research projects (Spanish national, EU, ESA, NASA, and other space agencies, the World Bank, and international organizations), serving as the coordinator or responsible investigator in seven of them . He has directed, or co-directed, more than 50 B.S. and M.S theses.