The Brundtland definition of sustainable development as development that meets the needs of the present without compromising the ability of future generations to meet their own needs, is the basis of various sustainability frameworks promoting the need to balance environmental, social and economic factors (e.g. the triple bottom concept: People, Planet, Profit). At a global level, it has driven the sustainability agenda for many years, and is an invaluable reflection point for anyone interested in understanding, questioning, stimulating or implementing a sustainability agenda.