This study is centred on transformation towards sustainable living. It investigated how global education prepares learners to live a sustainable lifestyle. To explore this area, the concept of sustainability, global education and transformative learning were critically examined, with a view to finding their relationships. Literature on sustainability, transformative learning and global education were reviewed to find out how their relationships impact on international students learning about sustainable living. The focus of the thesis is on environmental sustainability, especially through management of anthropogenic factors. The mixed methods research, involving the collection of quantitative and qualitative data was employed for the study. Quantitative data collection was done using survey instruments while qualitative data collection was through face-to-face interview of research participants. Each set of data was collected and analysed separately. The outcomes of the analysis of the two sets of data were integrated at the stage of discussion of findings. The aim of the study was to find out whether global education transforms learners towards sustainable living. Findings from the study showed that global education field transforms students towards sustainable living. Evidence from the study suggests that global education help students to acquire the skills and knowledge required for living sustainably. Also, the actions and behaviours of international students were found to be influenced more towards sustainable lifestyle than those from the host country. The degree of transformation students experience was measured by attitude change, intention to change and actions of students toward the environment. This study contributed to the conceptual understanding of the relationship between global education and transformation of learners towards sustainable living. It made both theoretical and practical contribution to knowledge. The findings from the study will be of benefit to different impact groups. These groups include business organisations, policy makers in government, educational institutions, and individuals.

Inspired by the question of the Club of Rome as to Design could help to translate the ubiquitous knowledge on sustainability into daily practise and Peter Senge's belief on mental models as a limiting factor to implementation of systemic insight (Senge 2006), we explored working with mental models as a sustainable design tool. We propose a definition for design uses. At the 7th Sustainable Summer School we collected general unsustainable mental models and "designed" sustainable ones. These mental models were tested as a part of the briefing to student projects and evaluated by the students. Analysing an existing product portfolio, we tested the ability of mental models to aid the creation of strategic design advice. We argue that mental models in the form of associative thinking and cognitive metaphors have been part of designing all along and overlap in nature with design methodologies to such an extent that they are sublimely suited to be used as a design tool. We summarize our prototyping exercises with the proposal of a design process using mental models to root sustainability in design practise and thinking beyond present-day eco-design (Liedtke et al 2013, Luttropp and Lagerstedt 2006, Pigosso and McAloone 2015).

Inspired by the question of the Club of Rome as to Design could help to translate the ubiquitous knowledge on sustainability into daily practise and Peter Senge's belief on mental models as a limiting factor to implementation of systemic insight (Senge 2006), we explored working with mental models as a sustainable design tool. We propose a definition for design uses. At the 7th Sustainable Summer School we collected general unsustainable mental models and "designed" sustainable ones. These mental models were tested as a part of the briefing to student projects and evaluated by the students. Analysing an existing product portfolio, we tested the ability of mental models to aid the creation of strategic design advice. We argue that mental models in the form of associative thinking and cognitive metaphors have been part of designing all along and overlap in nature with design methodologies to such an extent that they are sublimely suited to be used as a design tool. We summarize our prototyping exercises with the proposal of a design process using mental models to root sustainability in design practise and thinking beyond present-day eco-design (Liedtke et al 2013, Luttropp and Lagerstedt 2006, Pigosso and McAloone 2015).