It has been the weak dollar that has attracted billions in investments in energy markets this year because oil is priced in the U.S. dollar, essentially making crude cheaper globally. The dollar bounced back on Friday following Bernanke's comments, and crude prices rose only 8 cents after they had rallied strongly Thursday wheat he U.S. currency hit a 14-month low against the euro. Benchmark crude for November delivery settled at $71.77 on the New York Mercantile Exchange. ___ FCC launches probe of Google Voice service WASHINGTON (AP) ¿ Federal regulators will look into complaints by AT&T Inc. that Google Inc.'s free messaging and calling service, Google Voice, blocks calls to rural communities where local phone companies charge high connection fees. The Federal Communications Commission on Friday sent a letter to Google requesting information about its Voice service, which lets people sign up for one number that can route incoming calls to cell, office or home phones. The service also lets users place calls, including international calls, at low rates.