This excerpt from the 2007 Clinton Global Initiative features William Drayton, Founder and CEO of Ashoka: Innovators for the public; His Excellency Mohammed Al Gregawi, Minister of State for Cabinat Affairs, United Arab Emirates; Robert E. Rubin, Director & Chairman of the executive Committe, Citi; and Muhammad Yunus, Founder & Managing Director of the Grameen Bank, discussing successful models for sustainable development.