The value of design for contributing to environmental solutions and a sustainable future is increasingly recognised. It spans many spheres of everyday life, and the ethical dimension of design practice that considers environmental, social and economic sustainability is compelling. Approaches to design recognise design as a practice that can transform human experience and understanding, expanding its role beyond stylistic enhancement. The traditional roles of design, designer and designed object are therefore redefined through new understanding of the relationship between the material and immaterial aspects of design where the design product and the design process are embodiments of ideas, values and beliefs. This multi-disciplinary approach considers how to create design which is at once aesthetically pleasing and also ethically considered, with contributions from fields as diverse as architecture, fashion, urban design and philosophy. The authors also address how to teach design based subjects while instilling a desire in the student to develop ethical work practices, both inside and outside the studio.