Hill speaking about the use of circles:
The use of the circle refers to nature’s cyclical system which is now being used as a model for industrial ecology. Sustainability will be achieved by redesigning products and industrial processes as closed loops—materials that can’t safely be returned to nature will be continually turned into new products. Of course this is only one part of the redesign process. We need to use renewable energy, eliminate all poisonous chemicals, use fair trade and create social equity.
Found on: Colossal