Andreas Ciroth is founder and director of GreenDelta, a consulting and software company with focus on sustainability assessment and life cycle analyses. Environmental engineer by education, he finished his PhD (error calculation in LCA) in 2001 at the TU Berlin and is working since then on sustainability topics. He is leading the openLCA project to create a free, open source sustainability assessment software.Andreas is co-chair of the working group on meta-data descriptors in the Global Network of Interoperable Databases, and an international expert in LCA software and databases. In 2015, he supported UNEP in projects related to LCA database creation in Malaysia and Brazil, including training and capacity building. Andreas was the first subject editor of The International Journal of Life Cycle Assessment (founded in 1996 by Walter Klöpffer) for the field of “uncertainties”, nominated in 2004, and still holds this position. He is also member of the EditorialBoard.See also Ciroth A (2017) Goal and Scope Connection to the Interpretation Phase. Chapter 5 “Goal and Scope Definition in Life Cycle Assessment” (Curran MA ed). In: LCA Compendium – The Complete World of Life Cycle Assessment (Klöpffer W, Curran MA, series eds). Springer, Dordrecht, pp 161-167Rickard Arvidsson has a bachelor’s and master’s degree in bioengineering. He obtained his PhD degree in Energy and environment from Chalmers University of Technology, Sweden, in 2012. Currently he works as an associate professor at the division of Environmental Systems Analysis, department of Technology Management and Economics, Chalmers University of Technology. He mainly conducts research on environmental and sustainability assessments, including life cycle assessment, social life cycle assessment, environmental risk assessment, material flow analysis and substance flow analysis. The current research has a focus on emerging technologies and novel, advanced materials, including nanomaterials and new battery chemistry. His teaching duties mainly include two master’s courses in life cycle assessment and environmental risk assessment, as well as the supervision of master’s thesis projects. He has been a guest researcher at the department of Environment at the Technical University of Denmark and is a board member of the Swedish Life Cycle Center. In 2018, he received the Young Scientist LCA Award by the Society for Environmental Toxicology and Chemistry Europe, for his contributions to the development of prospective life cycle assessment.