Dr. Teresa Chahine is the author of "Introduction to Social Entrepreneurship," a comprehensive how-to guide based on her course at Harvard. Dr. Chahine is the social entrepreneurship program leader at Harvard T.H. Chan School of Public Health, Center for Health and the Global Environment. She divides her time between Boston and Beirut, where she helped launch a venture philanthropy organization supporting social entrepreneurs serving marginalized communities. Visit Alfanar.org to learn more about her work, and connect @teresachahine.

