Have you noticed, for example, that in Nature there is no waste? Nothing is really wasted. Everything is exchanged, optimized and used by the eco-system. It is this circular and systemic model that has existed for billions of years and inspires new environmentalists and many pioneering companies to invent a smarter, more sustainable economy. The proposed methodology is based on a twofold approach:> design thinking, theorized at Stanford, which consists of going through the co-creation between the actors, the rapid prototyping and the continuous improvement to find and put in place new ideas and devices. > Biomimicry, that is to say, to take inspiration from the 3.8 billion years of Nature's R & D to rethink systems, materials or forms. As a design agency, the authors accompany companies, communities and associations to rethink their products and services to make them more profitable from an economic point of view but also more virtuous for their users and nature.