The term sustainability originates from ecology, which indicates the ability of an ecosystem to maintain ecological processes, purposes, biodiversity and productivity into the future. Because a process is sustainable, it must use natural resources at a pace that they can be regenerated naturally. Have emerged by now clear scientific evidence to suggest that humanity is living in an unsustainable way, by consuming the earth's limited natural resources faster than it is able to regenerate. Therefore a collective social effort to adapt the human consumption of these resources within a level of sustainable development is a matter of capital importance for the present and the future of humanity. The concept is often used ...