Is urine diversion a new concept? In his presentation at SLU, Jan-Olof Drangert, Assoc. Prof. at Linköping University traces the evolution of sanitation and nutrient recycling in Sweden over the years. He suggests that, water-based sanitation used in the 20th century may have been just a brief detour in human history as we’ve strongly relied on dry sanitation systems in the past. Will our societies return to favor circular systems? Click to see what Dr. Drangert has to say about this.