Prof. Konstantinos Aravosis is Vice President and Waste Management BoD Chairman at Regulatory Authority for Waste, Energy and Water – RAAEY He is Professor and UNESCO Chairholder on Green Innovation and Circular Economy at the NTUA (National Technical University of Athens) and Professor at the ATHENS MBA (NTUA – Athens University of Economics) since 1997. He is the coordinator of the “Environmental Economics and Sustainable Development Research Group” of the Sector of Industrial Management and Operations Research of the Mechanical Engineering School. He was also a visiting professor at Imperial College - University of London and a research associate at the Earth Engineering Center of Columbia University - USA. He was Secretary General for Forestry, from 2/2022 to 7/2023, at the Greek Ministry of Environment and Energy. Prior to that, he was also Secretary General of Natural Environment & Water. He is a Mechanical Engineer (Aachen University of Technology - Germany) with an MSc in Management Science from Imperial College and a Phd from NTUA. He was an advisor to the Minister of Culture, on the Olympic Games projects, and their post-Olympic use. He has been President of the Greek Association of Environmental Protection Companies (PASEPE), President of the Hellenic Solid Waste Management Association (HSWMA) (now Hon. President), President of the Ordinary Environmental Committee of the Technical Chamber of Greece, President of the Greek Branch of the Waste to Energy Research and Technology Council, coordinated by Columbia University and Member of Evaluation Committees for Investment and Energy Projects of the Ministry of Development. Furthermore, he has been Member of the Board of the Organization of Labour Residencies (OEK) and General Manager of Environmental Companies. He has extensive research experience (as a coordinator or project team member of European Programmes) in investment management and evaluation, operational research and environmental investment analysis. He was co-founder and main organizer of the largest national volunteer campaign (45.000 volunteers) LETS DO IT GREECE where the whole country is cleaned in one day with symbolic character in the framework of the international campaign LETS DO IT WORLD. He has organized 14 International Conferences and has authored books and more than 100 publications in international scientific journals and proceedings of International Conferences while coordinating many national and international research projects.