Take, make, use, dispose. For decades, this has been the standard approach to production and consumption. Companies take raw materials and transform them into products, which are purchased by consumers, who ultimately toss them out, creating waste. But as warnings about climate change and environmental degradation grow ever louder, people are starting to challenge the sustainability of this model. Many business leaders and governments — including China, Japan, and the U.K.—argue that we should ditch this linear system in favor of a so-called circular economy of take, make, use, reuse, and reuse again and again. Read more at Fortune.