Jeffrey D. Sachs is a world-renowned economics professor, New York Times bestselling author, innovative educator, and global leader in sustainable development. He is University Professor and Director of the Center for Sustainable Development at Columbia University, and spent over twenty years as a professor at Harvard University. He has received many honors around the world, including the Tang Prize in Sustainable Development, the Legion of Honor by decree of the President of France, and the Order of the Cross from the President of Estonia, and has twice been named among Time's hundred most influential leaders in the world.