Can Greed Save Africa?

Thanks to the global commodities boom of the past few years, sub-Saharan Africa's economies, after decades of stagnation, are expanding by an average of 6% annually—twice the U.S. pace. And like bees to honey, investors are swarming into the region in search of the enormous returns that ultra-early-stage investments can bring.
http://www.businessweek.com/magazine/content/07_50/b4062046700574.htm?chan=search