**About the Editors**

**Guillermo San Miguel** is Lecturer and Senior Research Fellow (PCD-I3) at the School of Industrial Engineering (ETSII), Universidad Politecnica de Madrid. He holds a B.Sc. in ´ Chemistry, an M.Sc. in Environmental Impact Assessment from University of Wales, and a Ph.D. in Environmental Engineering from Imperial College London. He was recipient of the Ramon´ & Cajal fellowship in 2003 and the I3 Award for Research Excellence in 2007 from the Spanish Ministry of Science. His research interests include Life Cycle Assessment (LCA); environmental, economic, and social analysis of products, services, and organizations; carbon footprint analysis; renewable energies; and waste management. In the last decade, he has coordinated numerous publicly and privately funded research projects and the Marie Curie network on sustainable energy. He has or is participating in and coordinating numerous technical organizations (e.g., esLCA) and international conferences (CEST2021, Global NEST, etc.). His work has led to the production of over 50 indexed articles, 90 conference papers, and 8 book/book chapters.

**Sergio Alvarez** is Assistant Professor at the Land Morphology and Engineering Department in the School of Civil Engineering, Universidad Politecnica de Madrid (UPM). He has an International ´ PhD in Forest Engineering with distinction and the Extraordinary Doctorate Award. He has wide experience in sustainable studies under Life Cycle Assessment (LCA) and Multi-Regional Input–Output Analysis (MRIO Analysis). At present, he is a member of the Input–Output Analysis Society and Carbon Footprint UPM research group. He has participated in more than ten privately and public funded projects related to LCA and sustainability assessment covering a wide range of products and services (wood pallets, wood parquet, wildfire fighting, wind power, hydroelectric power, household consumption, civil infrastructures, and services). He is author of over 20 indexed articles and 6 books and book chapters. More specific info: www.huellaambiental.es
