Every leaf that falls from a tree becomes part of a new circle. In non-human ecosystems, everything is re-used or re-purposed. The natural world is the perfect circular system. Why is the same not true for humankind? Most of the things we possess will ultimately not be used for a long period of time. The current take-make-waste approach is a given fact of our present economy that we have perfected since the industrial revolution. The editors Dr Guenther Dobrauz-Saldapenna and Nicolas Huras believe that we urgently need to change our ways of producing, consuming and living. It is time to seriously consider circular economy as an