Currency exchange rates are shown at a money exchange site in New York July 11 , 2007. The dollar on Wednesday sank to a record low against the euro and a 26-year trough against sterling for a second day on fears that the crisis in the U.S. subprime mortgage market could cause a credit crunch. Uncertainty regarding the deteriorating subprime industry on Tuesday caused the biggest decline in the dollar against the yen since mid-March. REUTERS/Shannon Stapleton (UNITED STATES)