Bernhard Zangl is Professor of Global Governance at the Geschwister-Scholl-Institute for Political Science at the Ludwig Maximilian University of Munich.Barry S. C. Leadbeater is a retired Reader in Protistology at the University of Birmingham. His academic research interests include: ultrastructure, physiology and ecology of algae and protozoa, whereas his biotechnological research interests include: algae and water quality; physiology of algal/protistan biofilms and biological aspects of water treatment processes. He has authored and co-authored over 80 papers, edited five books and, presently, he is a monitoring editor of the journal Protist.