This article explores how to measure sustainability by looking at economic, environmental, and social aspects together. The focus is on figuring out how to tell if actions like making energy or food are sustainable. The authors use a life cycle approach to study this. They look at two examples: energy and food. The results show that measuring sustainability can help both industries and consumers find more sustainable choices. By using this method, people can see which activities are better for the Earth, the economy, and society.