The Earth Institute

Jeffrey Sachs is an eminent American economist and professor of sustainable development at Columbia University's School of International and Public Affairs. He had for many years been director of Columbia's Earth Institute, while he's served as special adviser for sustainable development to the last three secretary-generals of the United Nations.

A couple of days before the G-20 Summit in Antalya, I met with famous American economist Jeffrey Sachs in Istanbul. Professor Sachs, the director of the Earth Institute at the University of Columbia, has more than one hat.  

Written by 17 world-leading scientists, the Earth Statement clarifies, in eight essential elements, what the international climate agreement in Paris in December should achieve in order to provide the world with a good chance of avoiding dangerous climate change.