Bloomberg Philanthropies is seeking innovative ideas that U.S. cities can use to solve problems in affordable housing, health, money, and management. The foundation sent invitations to compete to 1,300 mayors of U.S. cities with more than 30,000 residents. The winner, to be announced next year, will receive $5 million, and four runners-up will each get $1 million.
Application Deadline: September 14, 2012

For more information: http://mayorschallenge.bloomberg.org/index.cfm?objectid=5E7C9C10-9EA6-11E1-823A000C29C7CA2F