Tue, May 21, 2013, 4:29 AM EDT - U.S. Markets open in 5 hrs 1 mins
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Office workers are reflected on a screen displaying share prices as they walk past the Australian Securities Exchange building in central Sydney
Men are reflected in electronic board displaying Japan's Nikkei average outside a brokerage in Tokyo
Traders work at their screens in front of the DAX board at the Frankfurt stock exchange
A man walks through the lobby of the London Stock Exchange
Traders work on the floor at the New York Stock Exchange
At least 51 killed in massive Okla. tornado
Aides knew of IRS audit, didn't tell Obama
'Oh my god, that thing is getting huge!'
Tornado's incredible trail of devastation
Supplements that make you more beautiful
