Different forms of inequality, resulting from anthropogenic environmental changes, constitute a large part of the environmental problems. Environmental benefits and harms are not distributed equally across and within national boundaries. Such benefits and harms are unevenly distributed within and between generations. The environmental harms are caused by our current practices and will afflict our future generations, while benefits are enjoyed by the present generations alone. The concepts of “sustainability” and “sustainable development” have been developed to address such problems of inter-generational equality. The concept of sustainability began its career in the context of sustainable agriculture and sustainable ecological system. Any a...