Former Federal Reserve Chairman Alan Greenspan forecast that interest rates will begin rising soon, perhaps rapidly. “I cannot perceive that we can maintain these levels of interest rates for very much longer,” he told former Securities and Exchange Commission Chairman Arthur Levitt in a Bloomberg Radio interview to be aired this weekend and next. “They have to start to move up and when they do they could move up and surprise us with the degree of rapidity which may occur,” Greenspan added. The yield on the 10-year Treasury note stood at around 1.55 percent on Thursday, down from 2.27 percent at the start of the ... (full story)