Article Photos: Mo. Powerball winner verified; Ariz.'s a mystery 5/10

A sign showing the new Powerball jackpot amount stands beside US 1 highway in Homestead, Fla., Wednesday, Nob. 28, 2012. The Powerball jackpot has climbed to $550 million, the second-largest payout in U.S. history. Tickets are selling at a rate of 130,000 a minute nationwide. That's about six times the volume from a week ago. (AP Photo/J Pat Carter)