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.
Inga Björk-Klevby Inga Björk-Klevby (born 1944), is the former United Nations Deputy Executive Director of the United Nations Human Settlements Programme (UN-HABITAT). She was appointed to this position by United Nations Secretary-General Kofi Annan in October 2005.