FED POLICIES: Most commodities rose after Chairman Ben Bernanke affirmed support of the Federal Reserve's policies. Gold, silver, copper, oil and soybeans ended higher. Natural gas and corn fell.
BERNANKE'S IMPACT: Bernanke's comments led traders to believe that the Fed will keep short-term interest rates low through 2014, which weighed on the dollar. Since commodities are priced in dollars, a weaker dollar makes them more of a bargain for traders who use other currencies.
WHEAT GAINS: Wheat prices rose slightly on reports that weather may cause problems for the winter wheat crop in northern France as it emergences from dormancy.