Question: The UN SDSN Leadership Council is led by the director of the Earth Institute at what university?

Context paragraphs:
Eli Tene: Eli Tene (born May 1, 1963) is an Israeli–American businessman and community leader; and a co-founder, co-managing director and principal of the Peak Corporate Network of real estate entities.  He is a co-founder, former co-Chairman and current member of the Israeli Leadership Council, currently called the Israeli American Leadership Council (IAC) and a board member of the Western Region of Friends of the Israel Defense Forces.

Xiaolan Fu: Xiaolan Fu (傅晓岚) is the Founding Director of the Technology and Management Centre for Development (TMCD), Professor of Technology and International Development and Fellow of Green Templeton College.  She was appointed by the Secretary-General of the United Nations to the Ten-Member High Level Advisory Group of the UN Technology Facilitation Mechanism and to the Governing Council of the UN's Technology Bank for Least Developed Countries.  She is also a member of the UN SDSN Leadership Council led by Jeffrey Sachs and a member of the Council for Global Economic Transformation co-chaired by Joseph Stiglitz and Michael Spence.

Center for Climate Systems Research (CCSR): The Center for Climate Systems Research is a key Earth Institute center with over 25 scientists and staff researching issues involving the interplay between Earth's climate and society.  The center's motto is "Columbia's Gateway to NASA and Beyond", as it has a special relationship with the NASA Goddard Institute for Space Studies (GISS).  It is a "Gateway to NASA", because the center is co-located with GISS in Columbia University's Armstrong Hall above Tom's Restaurant in New York City.  In this historic location, Columbia and NASA scientists work together closely to understand the Earth's climate and how changes can impact society both in the United States and around the world.  Importantly, CCSR scientists also work with many other partners – governmental, private sector, and non-governmental organizations – to answer these challenging scientific and socioeconomic questions (i.e., "and Beyond").  The director of CCSR is Dr. Michael J. Puma.

Northwest Earth Institute: The Northwest Earth Institute is a nonprofit organization in Portland, Oregon, with the intention of "inspiring people to take responsibility for Earth."  Northwest Earth Institute was started in 1993 by native Oregonians Jeanne and Dick Roy and currently develops and implements programs designed to motivate individuals and organizations to take action toward a sustainable future.  Their most successful program is a series of ten self-facilitated discussion courses to be used by small groups that address various topics related to the environment and sustainable living.

World Church Leadership Council: The World Church Leadership Council is a leadership body of the Community of Christ.  It encompasses the First Presidency, the Council of Twelve Apostles, and the Presiding Bishopric.  The group convenes at the church headquarters in the Independence Temple.  With the adoption of a new set of church bylaws at the 2002 World Conference, this body replaced the predecessor council known as the Joint Council.  Bylaw provisions allow for additional members to be added to the World Church Leadership Council.

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.

Jewish Leadership Council: The Jewish Leadership Council was formed in 2003, (as the Jewish Community Leadership Council).  The Council was founded by its first Chairman, then President of the Board of Deputies of British Jews, Henry Grunwald QC and an array of other senior UK Jewish leaders.  The Council acts as an umbrella group for various Jewish community organizations, charities, Zionist and pro-Israel advocacy groups.

Richard Plunz: Richard Plunz (born October 18, 1943) is an American architect, critic, historian and the Professor of Architecture at the Graduate School of Architecture, Planning, and Preservation at Columbia University, New York.  He holds professional and post-professional degrees in engineering, architecture, and urbanism from Rensselaer Polytechnic Institute.  He also serves as a Professor in the Earth Institute of the same university.  Plunz chaired the Division of Architecture and directed the Urban Design Program at the Graduate School of Architecture at Columbia University.  He is the founding director of the Earth Institute's Urban Design Lab.

Millennium Cities Initiative: The Millennium Cities Initiative (MCI) is a project of the Earth Institute at Columbia University.  Founded by Earth Institute director Professor Jeffrey Sachs in 2006, MCI aims to assist through research and policy analysis selected mid-sized cities across sub-Saharan Africa, located near Millennium Villages, to achieve the Millennium Development Goals (MDGs).  The project's initial focus is on policy analysis impacting foreign direct investment (FDI), with a view to creating employment, stimulating domestic enterprise development and fostering economic growth.  In addition to foreign investment, the MCI is working to promote an integrated City Development Strategy.  The MCI draws upon, and strengthens, the MDGs work already underway by adding a focused urban-based component.  MCI aims to demonstrate through its research and policy analysis that more FDI can be attracted to regional urban centers in Africa, with the resulting employment and economic growth effects.  The Initiative will also produce urban development strategies issuing from the Initiative’s own MDG-based needs assessments that will inform municipal and national governments and their donors of the accurate, actual costs of achieving the MDGs.

Steven A. Cohen (academic): Steven A. Cohen (born 1953 in Orange, New Jersey) is an American academic who has taught public management and environmental policy at Columbia University since 1981.  He is currently the Chief Operating Officer and Executive Director of Columbia University's The Earth Institute and a Professor in the Practice of Public Affairs at Columbia University’s School of International and Public Affairs.  He is also the Director of the Master of Public Administration in Environmental Science and Policy in the School of International and Public Affairs and the Director of the Master of Science in Sustainability Management in the School of Continuing Education.  He served on the Environmental Protection Agency Administrator’s National Advisory Council for Environmental Policy and Technology (2002–2004), and currently serves on the Board of Homes for the Homeless and the Board of Directors of Willdan Energy Solutions.

Supporting paragraphs: Xiaolan Fu Jeffrey Sachs
Answer: Columbia University