To Martin Fisher, 48, and Nick Moon, 51, a simple pump could be the solution to poverty for millions of Africans. They're the co-founders of KickStart, a San Francisco--based nonprofit that encourages rural entrepreneurship by providing tools that Africa's poor can afford. Since the group was founded in Nairobi in 1991 under the name ApproTEC, it has developed a machine to make building blocks, a press that extracts cooking oil from seeds, a hay baler and a series of hand-operated micro-irrigation pumps. Their latest, the MoneyMaker Hip Pump, retails in Africa for $34.
For someone like Felix Mururi, a Kenyan in...