Sustainability could be defined as an ability or capacity of something to be maintained or to sustain itself. It’s about taking what we need to live now, without jeopardising the potential for people in the future to meet their needs. If an activity is said to be sustainable, it should be able to continue forever. Living sustainably is about living within the means of our natural systems (environment) and ensuring that our lifestyle doesn’t harm other people (society and culture). Increasingly our lifestyle is placing more and more pressure on natural systems. Scientists continue to investigate how human interactions with natural systems can be improved and sustained.