Athanasios K. Stubos is the Head of the Environmental Research Laboratory, Director of the INRASTES Institute and Vice President of NCSR “Demokritos”, Athens-Greece. He has also served as Vice President for the Center for Renewable Energy Sources, Greece. His main research interests include Hydrogen Technologies, Environmental Fluid Mechanics, Transport Phenomena in Porous Media, Energy Processes and Environmental Impact. At present, he is the Greek delegate in the States Representatives Group of the Fuel Cells and Hydrogen Joint Undertaking (FCH JU).