Bloomberg Philanthropies and the Huffington Post have launched an online platform for Americans to vote on the Mayor's Challenge competition proposals. The 20 finalists' revised proposals are now online.
Feb 23, 2013 Huffington Post
Launched today by Bloomberg Philanthropies, the Mayors Challenge will award $9 million in prizes as a down payment on urban innovation, reports Ariel Schwartz.
Jun 13, 2012 Fast Company Co.Exist
