The terms ‘sustainable’ and ‘eco-friendly’ are often used broadly in their application, but share a common concern for various ecologically detrimental processes. ‘Sustainability’ gained prominence as term following the publication of the ‘Brundtland Report’ in 1987, which positioned the concept around economic, social and ecological considerations. The term is generally seen as relating to the idea of a harmonised relationship between human life and environmental considerations. The term ‘eco-friendly’ is concerned purely with environmental considerations. While broad in its use, it refers to the idea of products and processes having the smallest possible negative impact on the environment.