Environmental sustainability is talked about in relation to all aspects of our lives – from creating eco homes and environmentally conscious communities to sourcing sustainable food, renewable energy, low impact furniture and clothing. But what does environmental sustainability actually mean? There are many definitions in use by green groups, business and politicians – some simple and some more complex. The concept of sustainable development was first put forward in the 1987 report ‘Our Common Future’ – prepared for the World Commission on Environment and Development.