And ever-increase tonnage of U.S. coal bound for China is adding to the problem.

FORBES: As Coal Imports Rise, Getting Harder To Breathe In China Cities

And it also avoids the nasty problem of the zero lower bound.

FORBES: Federal Reserve Takes Another Step Toward Rule-Based Monetary Policy

After all, when you have a problem of this size you are bound to have litigation.

FORBES: Y2K fear merchants

With an election next year and South Africa so completely dominated by the ANC, its politics are bound to be susceptible to nepotism and other corrupt practices and Mr Mbeki acknowledged the problem was nationwide.

BBC: By Africa Correspondent Jeremy Vine