Ghana is all dressed up for President Obama's first official visit to sub-Saharan Africa. Is the rest of the continent ready for tough love? Does international aid lead to dependence? Can it be structured to help countries help themselves? Also, General Motors emerges from bankruptcy, and rhesus monkeys live longer when they eat fewer calories—a lot fewer. Will it work for people?
Banner image: President Barack Obama addresses the Ghanaian Parliament in Accra, Ghana July 11, 2009. Official White House Photo: Chuck Kennedy