If your equity falls too far below zero, lenders are less likely to agree to a short sale because it costs them more.

FORBES: Magazine Article

This energy source remains largely untapped, though, simmering either too far below the surface to reach, or isolated from water that could carry it up.

FORBES: Looking For Energy, Google Goes To Hell

There is a lot of unresolved history in China, some of it too recent and too painful to address, but not far below the surface.

BBC: Old 100 names: Witnesses of China's history

The consensus among professional forecasters is that America's GDP will grow by 2% in 2012, below its underlying speed limit, and far too slow to bring the jobless rate down.

ECONOMIST: The world economy

Currently, the yield on Greece's 10-year bonds is just below 10 percent far lower than the 30 percent it reached last June, but still too high for a return to markets now.

NPR: Greece: Economic Recovery In Sight