In the last few decades, sustainability has become an issue of concern in every aspect of human existence. In fact the concept of sustainability is more important as compared to the concept of environmental protection. This is because the concept of sustainability do takes into consideration the necessities associated with human existence (Lipman 2010). It also extends to the humanity a workable and positive vision for growth and development. Realistically speaking, if one talk in the context of the impact of human needs on environment and finite resources, very few people tend to be motivated by it (Lipman 2010). However, when it comes to sustainability, things are not so (Lipman 2010). This is because the concept of sustainability furnishes the practical markers and framework for bringing about a positive change (Lipman 2010). In an ethical context, the concept of sustainability is directly linked to the notions of social equity and social justice (Warner 2009). Eventually, it is the lifestyle of the richest and poorest members of the human society that are a cause of grave concern for the future of the entire humanity, though for very different reasons (Warner 2009). The richest members of the human society tend to consume far more than what the planet earth can provide for. In other words, the richest members of the human society are much exceeding in their consumption of finite resources, without exhibiting any ethical concern or scruples (Warner 2009).