The UN SDSN Leadership Council is led by the director of the Earth Institute at what university?
Jeffrey Sachs Jeffrey David Sachs ( ; born November 5, 1954) is an American economist and director of the Earth Institute at Columbia University, where he holds the title of University Professor, the highest rank Columbia bestows on its faculty. He is known as one of the world's leading experts on economic development and the fight against poverty.
Richard Sandbrook John Richard Sandbrook OBE (13 August 1946 – 11 December 2005) was Director of the International Institute for Environment and Development from 1976 to 1980.