We use the earth precious natural and biological resources in an arrogant way as if there are no limits. Continuing the way we do will lead to great social, ecological and economic problems. A new economic concept is needed. One that blends radical sustainability with circularity. It is not a matter of some more recycling but a different way of organizing our economy. Fundamental change is needed to make this happen. We are in the middle of a necessary societal transition. As a kind of 'activist professor' Jan Jonker is trying to create change in organisations and society. The Circulair Economie is one of the promising concepts enabling us to make that transition. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at www.ted.com/tedx