No one is more knowledgeable about the scope of the SDGs than world-renowned economist, global leader in sustainable development and Columbia University Professor, Jeffrey Sachs. Professor Sachs is Director of the UN Sustainable Development Solutions Network and Director of the Center for Sustainable Development at Columbia University. He is a commissioner of the UN Broadband Commission for Development, and has served as Special Advisor to every UN Secretary General appointed between 2001 and 2018.