For a novel and somewhat dispiriting theory of economic divergence, read A Farewell to Alms, published this year, by Gregory Clark of the University of California at Davis.

FORBES: Wealth and Poverty

Looking at the global picture, the divergence of regional economic performance is going to get a lot bigger in terms of growth, inflation and cost of capital.

FORBES: Back In Business

This has led to a divergence in competitiveness, in growth of exports, in overall economic growth, and in employment among the member countries.

FORBES: To Save the Euro, Establish Dual Currencies