"A circular economy (also referred to as circularity and CE) is a model of production and consumption, which involves sharing, leasing, reusing, repairing, refurbishing and recycling existing materials and products as long as possible. CE aims to tackle global challenges as climate change, biodiversity loss, waste, and pollution by emphasizing the design-based implementation of the three base principles of the model. The three principles required for the transformation to a circular economy are: eliminating waste and pollution, circulating products and materials, and the regeneration of nature. ... " compare: https://en.wikipedia.org/wiki/Circular_economy . There are many sources about the topic available, for example: https://ellenmacarthurfoundation.org/topics/circular-economy-introduction/overview or https://www.epa.gov/recyclingstrategy/what-circular-economy or https://www.weforum.org/projects/circular-economy or https://corporatefinanceinstitute.com/resources/knowledge/economics/circular-economy/ or https://www.weforum.org/agenda/2022/06/what-is-the-circular-economy/ , last visit: 11. September 2022.