President Obama unveiled this week a $7 billion plan to improve energy access in Africa over the next five years. The "Africa Power" initiative was announced during President Obama's three country tour of Senegal, South Africa, and Tanzania.
Foot-powered irrigation pumps are useful but limited. Diesel pumps are expensive. Solar-powered pumps could be an answer.
South Africa, Nigeria, Angola, Ghana, and Ethiopia all have economies that are growing at a brisk pace. But their future depends on how they invest that money, writes Matthew Hawkins.