The spread of consumer spending power across China means that a company must constantly expand its geographic footprint--but the requirements of scale make it extremely critical to cluster locations appropriately to ensure competitive scale economies.

FORBES: Unlocking China's Consumer Power

But, as National Geographic described last month, arenga does have some remarkable features that could provide an important, if small-scale, piece of the sustainable energy and development puzzle.

FORBES: An Energy Crisis Solution That Proves Small Can Be Beautiful