ARE YOU READY FOR THE SOCIAL ENTREPRENEURSHIP REVOLUTION? "In her book Social Entrepreneurship for the 21st Century, Georgia Levenson Keohane provides a great insight into the emergence of social business and entrepreneurship. Her work provides a clear-sighted analysis of the many different dynamics at play as we test new models and solutions for global economic change." --MUHAMMAD YUNUS, 2006 Nobel Peace Laureate, author of Banker...