Giorgos Kallis is an ecological economist and political ecologist working on environmental justice and limits to growth. He has a Bachelors degree in chemistry and a Masters in environmental engineering from Imperial College, a PhD in environmental policy from the University of the Aegean, and a second Masters in economics from the Barcelona Graduate School of Economics. He is an ICREA professor since 2010. Before coming to Barcelona, Giorgos was a Marie Curie International Fellow at the Energy and Resources group at the University of California-Berkeley.