Sustainability leadership entails the processes, which leaders, policymakers, and academics undertake in order to implement sustainable development policies and other initiatives within their organizations. It encompasses approaches, methods, and systemic solutions to solve problems and drive institutional policy towards a more sustainable organization. Higher Education Institutions (HEI) play a particularly important role, especially with regard to their institutional leadership role in promoting sustainable development. There is a paucity of research focusing on sustainability leadership in universities. In order to address this gap, this paper discussed the concept of sustainability leadership based on literature and empirical insights. The study aimed to understand the main characteristics of sustainability leaders at HEI and the main challenges they are confronted with. Secondary research questions involved gender issues and positive outcomes of sustainability leadership. The empirical component of the study consisted of an online-questionnaire survey performed among leaders (n = 50) from a set of universities in 29 countries. The sampling scheme was purposive, based on the membership in the Inter-University Sustainable Development Research Program (IUSDRP). The study was explorative in nature, and the descriptive statistics were used for the analysis. Due to the purposive sampling, the participants from top management positions could be considered as experienced, and their views were assumed to be information-rich. With a self-evaluation, the respondents described their leadership style and their usual traits, with inclusive style and systemic thinking being predominant in the sample. Regarding the skills, the respondents selected the ability to innovate, to think long-term, and to manage complexity from a pre-defined set of options. Connectedness with interdisciplinarity and knowledge about organizational settings, as well as global challenges and dilemmas, were stated as important issues related to the knowledge required for being a leader. Regarding requirements for a change towards more sustainable universities’ curriculum adaptation, investments in education for sustainable development (ESD), sustainable procurement, and reporting were mentioned. The study also revealed that gender issues were taken seriously among the sampled institutions, which is an encouraging trend. Challenges seen in implementing sustainability leadership are, for instance, a lack of interest by the university administration and among some members of the academic community, as well as lack of expertise and materials or resources. Based on the empirical insights, a set of measures were listed and which may be adopted in the future, so as to allow leaders of Higher Education Institutions to enhance their sustainability performance.

The boom in technological advances in recent decades has led to increased demand for rare earth elements (REEs) (also known as rare earth metals) across various industries with wide-ranging industrial applications, including in the clean energy sector, but with some environmental, economic, and social footprint concerns. This paper reviews the complexities of the production, consumption, and reuse or recovery of REEs, presenting current trends in terms of potentials and challenges associated with this. This paper in particular focuses on the supply, demand, and (environmental and economic) sustainability of REEs, as a subset of critical raw materials. It does so via a critical stocktaking of key discussions and debates in the field over the past 15 years up until now, through a thematic analysis of the published and gray (policy) literature with a grounded theory approach. The paper finds that carefully balanced lifecycle sustainability assessments are needed for assessing the respective dimensions of the extraction, processing, and reuse or recovery methods for different types of REE sources and supplies to meet current and future demands. It furthermore diagnoses the need for taking into account some shifts and substitutions among REEs also for reasons of cost and locational supplies for the security of supply. Finally, the paper provides some overall policy recommendations for addressing current problems, with a conceptual framing of the UN Sustainable Development Goals.