Greenspan upbeat on economy

US - Prospects for the future of the US economy have been "scarcely diminished" by the 11 September attacks, Federal Reserve chairman Alan Greenspan has said.

In a speech aimed at summing up the effect of the attacks on the economy over the past few weeks, Mr Greenspan said that growth in productivity would undergo "a one-time downward adjustment".

"But once the adjustment is completed, productivity growth should resume at rates in excess of those that prevailed in the quarter-century precedin