Two years ago, citizens in the Arab world—fired by their ideals and visions of a better life—ignited a social movement …

transform the developing world. Rich donors are devoting fortunes—many of them earned through computer software, entertainment … building dreams.This issue of F&D looks at the world of targeted giving and social entrepreneurship.“ Philanthropy’s role is to … get things started,” says Microsoft co-founder Bill Gates, who is the world’s most generous giver. “We used foundation …