Klaus Lackner, Kwame Boakye-Agyei, LDEO, Luis Alberto Moreno, Lynn Sykes, M.P.A. in Development Practice, Malawi, Marc Levy, Martín Erasto Torrijos Espino, Mary-Elena Carr, Matt Berg, MDG East, Millennium Development Goals, Millennium Promise, MPA in Environmental Science and Policy, MS in Sustainability Management, MTV, Nancy Degnan, Natalie Boelman, Nigeria, Norman Borlaug, Nouriel Roubini, NYC, Paul Farmer, Pedro Sanchez, Peter Coleman, Peter Schlosser, Piali Basu, Prabhjot Dhadialla, Professorships, Raffaela Kozar, Robert Pollack, Roy Hyunjin Han, Ruth Defries, Sachs Student Lecture, Sauri, Selin Kocaman, Senegal, Senior Thesis, Shahid Naeem, Shakira, SIPA, solar energy, Sonia Sachs, Steve Cohen, sustainable mobility, Ted Turner, The Columbia Campaign for the Earth Institute, UN, Undergraduate Major in Sustainable Development, Upmanu Lall, Urban Design Lab, urban planning, USA, Wally Broecker,