Life in four African villages was transformed after San Franciscans, Bob Marsh, Mark Summer and Kristin Peterson, installed a wi-fi system. "The farmers learned on the Internet how to prevent diseases, control pests and increase plantain production," says Summer to reach the village of Nyarukamba in western Uganda, visitors have to clamber up a thin, almost
dirt track. It's not the kind of place you would expect to find subsistence farmers surfing the Web with wi-fi computers or making voip (voice over Internet protocol) phone calls. But that's exactly what the village's 800 or so inhabitants...