Sustainability: New Approaches for a Wicked Problem

This publication is part of the Green Hive project, a Cooperation Partnership in the Vocational Education and Training (VET) field, co-funded by the European Union through the Erasmus+ programme. The initiative brings together five organisations - the Technological University of the Shannon – Midlands Midwest (Ireland), Lascò (Italy), Femxa (Spain), KEAN (Greece), and TEAM4Excellence (Romania) - united by the ambition to reshape sustainability education and empower learners to address the complex challenges of the green transition across Europe. This publication presents the results and reflections emerging from the Green Hive experience. It frames sustainability as a “wicked problem” - a challenge characterised by complexity, uncertainty, interdependent systems, and the absence of single or straightforward solutions. It highlights why climate change, environmental degradation, and social inequalities demand systemic thinking, cross-sector collaboration, and transformative approaches to education. The document introduces the Green Hive ecosystem, an innovative model built around local Sustainability Education Hubs - the “Green Combs” - connected through a shared digital platform to promote knowledge exchange, co-creation, and experimentation. It explores how these hubs engaged educators, learners, businesses, NGOs, and public authorities to design contextually grounded initiatives aligned with the European Sustainability Competence Framework (GreenComp). A key component featured in this publication is the European Challenge for Green Combs, a Europe-wide competition carried out in 2025, which mobilised VET learners to develop practical solutions to real-world sustainability issues. The report presents the winning initiative - Fighting for Wellness by Liceul Tehnologic “Lazăr Edeleanu” Năvodari (Romania) - alongside a rich collection of promising practices from Greece, Romania, Spain, Ireland, and Italy. These initiatives demonstrate how students addressed topics ranging from energy efficiency and waste management to water conservation, fast fashion, and biodiversity protection. Across its chapters, the publication emphasises the importance of systems thinking, circular economy preparedness, and the development of green competences such as critical thinking, collective action, futures literacy, and responsibility. It underscores the role of education not only in knowledge transmission but in enabling agency, co-creation, and resilience - qualities essential for navigating ambiguity and fostering sustainable change. Key findings highlight that meaningful sustainability education emerges when digital innovation, youth engagement, and cross-sector collaboration intersect. The publication concludes with forward-looking reflections on scalability, advocating for adaptable models rooted in everyday practice and supported by strong networks, capable of growing from local action into systemic impact. This document contributes to the broader mission of Green Hive: to inspire educational transformation, empower young people as agents of change, and support communities in building a greener, more just, and more resilient future.