 He has also been a visitor at the Free University of Berlin (1980–81), Stanford University and the University of California, Davis, (1988–89), Yale University (1999-2001), and FLACSO Sede-Ecuador (1994–95 and 2007–15).He directed the CEECEC and EJOLT research projects on ecological economics and political ecology between 2008 and 2015.He is officially retired from AUB, but still professionally active and in 2016, aged in his mid 70s, he received a €2 million Advanced Grant from the European Research Council (ERC) for a further five-year project, "A Global Environmental Justice Movement - The EJAtlas" (www.ejatlas.org).