The attack on a Nairobi mall is another example of the risky environment that is sending retailers elsewhere.
A few questions. Like: Will expanding energy access in Africa conflict with Obama's climate goals?
We've often grumbled that U.S. GDP data can be inaccurate, at least in its early phases. But that has nothing on parts of Africa, where estimates of GDP can be off by 60 percent or more. So why is it so hard to calculate the size of an economy?