Bloomberg Mayors Challenge

June 13, 2012 - 6:35 AM
FILE - In this April 11, 2012 file photo, New York City Mayor Michael Bloomberg, center, speaks in Washington. New York City’s billionaire mayor is using his personal fortune to try to spark innovation in the nation’s cities. The mayor tells The Associated Press that his organization, Bloomberg Philanthropies, is inviting the mayors of the nation’s 1,300 largest cities to compete for five prizes totaling $9 million. (AP Photo Manuel Balce Ceneta, File)