A man walks past charts of stock indices at the Stock Exchange in Athens, Monday, Aug. 8, 2011. Greece on Monday banned short selling on the stock market for two months, after shares on the Athens ... more 
A man walks past charts of stock indices at the Stock Exchange in Athens, Monday, Aug. 8, 2011. Greece on Monday banned short selling on the stock market for two months, after shares on the Athens Stock Exchange plunged to their lowest level in more than 14 years as financial markets were buffeted by worries over the U.S. economy following a downgrade of the country's debt. (AP Photo/Thanassis Stavrakis) less 
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Associated Press | Photo By Thanassis Stavrakis
Mon, Aug 8, 2011 12:16 PM EDT