LONDON, ENGLAND - SEPTEMBER 22: A city worker ties his tie as he walks past the London Stock Exchange on September 22, 2011 in London, England. Share prices on world stock markets have fallen sharply... more 
LONDON, ENGLAND - SEPTEMBER 22: A city worker ties his tie as he walks past the London Stock Exchange on September 22, 2011 in London, England. Share prices on world stock markets have fallen sharply today following several warnings over future prospects for the global economy. Both Christine Lagarde, head of the IMF and Robert Zoellick,president of the World Bank, have voiced their concerns over the health of the economic situation. Today the UK FTSE 100 has fallen 4.7%, whilst the US Dow Jones is trading at nearly 3.5% down. (Photo by Oli Scarff/Getty Images) less 
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Getty Images | Photo By Oli Scarff / Getty Images
Thu, Sep 22, 2011 12:26 PM EDT