Disputation

Date	4 September 2026, 10:00
Doctoral student	Theresa Rötzel
Department	Socioeconomics
Location	Universität Hamburg Edmund-Siemers-Allee 1 20145 Hamburg AS-Saal
Title of the dissertation	Zooming in and out: Investigating Corporate Responses to Grand Challenges across Levels and Time
Examination board	Chair: Prof. Dr. Laura Edinger-Schons First examiner: Prof. Dr. Timo Busch Second examiner: Prof. Dr. Anita Engels

Disputation

Date	10 September 2026, 14:00
Doctoral student	Anna Margolis
Department	Socioeconomics
Location	Universität Hamburg Von-Melle-Park 9 20145 Hamburg Room A215
Title of the dissertation	FROM SYSTEMS THINKING TO SYSTEMS DOING: Developing Actionable Solutions to Support Evolutionary Learning and Transformative Outcomes in Circular Ecosystems through Multi-Actor Collaboration
Examination board	Chair: Prof. Dr. Timo Busch First examiner: Prof. Dr. Fenna Blomsma Second examiner: Prof. Dr. Domenico Dentoni Third examiner: Prof. Dr. George Sjoerd Romme Additional Member: Prof. Dr. Sebastian Späth