Kaarin Taipale, Finland: "What is the colour of sustainable development"
Jan-Olof Drangert, Sweden: "A history of mental views on the re-use of human-rerived nutrients" The last part of the abstract states: The last part of the paper will focus on views among residents to eating food produced with the help of human-derived fertilisers.
Ron Sawyer, Mexico: "Sanitation as if it really mattered: Getting toilets out of the (water) closet and into the loop"
Martin Oldenburg, Germany: "Toilets for the re-use of natural resources - Examples and Applications"
What? Water may be the most reusable resource we have.