Arno Rosemarin is Senior Research Fellow at the Stockholm Environment Institute. His specialities include ecological sanitation, nutrient flows, eutrophication of freshwater and marine systems and aquatic eco-toxicology. He has carried out projects in diverse countries including “Governance Surrounding Global Phosphorus Limitation” and participated at the 2nd European Sustainable Phosphorus Conference 2015 in Berlin. Rosemarin co-wrote The Challenges of Urban Ecological Sanitation. Lessons from the Erdos Eco-Town Project (2012) and worked on numerous scientific articles and reports.