Keston is a former Postdoctoral Scholar at the Center for International Environment and Resource Policy, Fletcher School, Tufts University. He is currently undertaking research on climate investments in a low-income Caribbean nation - Haiti. He earned his PhD in Development studies at SOAS University of London. From 2015 to 2016, he served as a member of the Advisory Panel for the 2016 Caribbean Human Development Report, appointed by Assistant Secretary General of the United Nations Development Programme (UNDP) Latin America and Caribbean Bureau, Ms Jessica Faieta. He is interested in the politics of development, the dynamics of social relations and technological change, the international political economy, governance and policy-making in the developing world.