Karel Van Acker is professor in Circular Economy at KU Leuven with a joint mandate at the the department of Materials Engineering (faculty of Engineering Sciences) and at the Centre for Economics and Corporate Sustainability (faculty of Business and Economics). His research is on developing strategies to realize the circular economy (CE) and on sustainability assessments of these CE strategies, including amongst others recycling, materials substitution, sharing economy. Karel holds a PhD in Materials Science and has been for 12 years coordinator of the KU Leuven Materials Research Centre (>500 researchers).  He also leads the policy research centre “Circular economy” for the Flemish government and currently is the chairman of the Sustainability Council of KU Leuven.