Over the past three decades, dozens of different definitions of sustainability have been proposed in the literature. The most widely used definition of sustainability is that of the Brundtland Commission (World Commission on Environment and Development, 1987, p. 8): “development that meets the needs of the present without compromising the ability of future generations to meet to theirs. » Ensuring global food security, understanding the environmental impact of economic activity and ensuring basic human needs are met fall under this definition of sustainability. Unfortunately, it is very difficult to apply for an organization and this definition provides little guidance on how to identify future versus present needs (Carter et. al, 2008 pp.363-364). Starik and Rands (1995, p.909) define sustainability as “the capacity of one or more entities, individually or collectively, to exist and flourish (either unchanged or in evolved terms) for extended periods of time , in such a way that the existence and flourishing of other communities of entities are permitted at related levels and in re...