For the past six months FORBES has engaged in an experiment: Can focusing some of the world’s greatest entrepreneurial and philanthropic minds on the problems of one specific country make a tangible difference? With that in mind, we made Liberia the centerpiece of the second annual Forbes 400 Summit on Philanthropy, attended in June by more than 150 billionaires and near-billionaires. President Sirleaf and several of the country’s top social entrepreneurs addressed the participants, who then broke into groups to see how they could help them. In October FORBES followed up, leading a delegation of a dozen top philanthropists and private sector altruists to Liberia on a three-day mission to see their how their ideas worked in action.