Mathias Risse is Lucius N. Littauer Professor of Philosophy and Public Administration and Director of the Carr Center for Human Rights Policy at the John F. Kennedy School of Government, Harvard University. His work primarily addresses questions of global justice - human rights, inequality, taxation, trade and immigration, climate change, obligations to future generations, and the future of technology. He has also worked on questions in ethics, decision theory, and 19th c. German philosophy. He also teaches in Harvard College, the Harvard Extension School, and is affiliated with the Harvard philosophy department. Risse is the author of On Global Justice and Global Political Philosophy. He serves as Co-Director of Graduate Studies at the Edmond J Safra Center for Ethics, as well as Director of the McCloy program. He has been a visiting professor at the National University of Singapore, New York University Abu Dhabi, and Leuphana University. Risse studied in Bielefeld, Pittsburgh, and Jerusalem. Gabriel Wollner is Professor of Political Philosophy at the University of Bayreuth. His academic interests are in political philosophy and ethics, and the application of these inquiries to various issues in public policy and economics. Previous work has appeared in The Journal of Political Philosophy; Politics, Philosophy and Economics; The Journal of Social Philosophy, Review of Social Economy. Wollner studied at the universities of Oxford and Harvard and earned his PhD from University College London in 2011. Prior to joining the University of Bayreuth, he was Assistant Professor in Philosophy at the London School of Economics and Junior Professor in Political Philosophy at Humboldt-Universität zu Berlin.