While many obstacles in Africa are similar to those in other emerging markets, our research shows that five of these challenges are more pronounced, requiring Africa-specific solutions: an underdeveloped infrastructure, a disorganized and fragmented retail landscape, a lack of reliable market research, unclear and ever-changing government regulations and a severely limited talent pipeline.

FORBES: How Companies Overcome Africa's Five Great Challenges

Green infrastructure generally refers to the use of the natural landscape instead of engineered structures.

FORBES: Smart Communities will Build Green Infrastructure

Because we know we can't build our economic future on the transportation and information networks of the past, we are remaking the American landscape with the largest new investment in our nation's infrastructure since Eisenhower built an interstate highway system in the 1950s.

CNN: Obama's remarks on signing the stimulus plan