The TED Prize has always been about big ideas, but since its establishment in 2005, the $100,000 purse and “a wish to change the world” has gone to individuals, from Bill Clinton and Bono to oceanographer Sylvia Earle and street artist JR. The winner of the 2012 prize is a concept: the City 2.0. “It is an idea upon which our planet’s future depends,” wrote TED’s Chris Anderson and Amy Novogratz in a statement issued this morning. They also describe what the City 2.0 is (forward-looking, sustainable, effective encouraging of innovation, education, culture, and economic opportunity) and is not (a sterile utopian dream). So how will the City 2.0 use all that prize money? It will be spent by “visionary individuals around the world who are advocating on its behalf.” This group has been invited to collectively craft a wish that is capable of jumpstarting a massive collaborative project among members of the TED community. Send your urbane suggestions to tedprize@ted.com. The wish will be unveiled on February 29 at the 2012 TED Conference in Long Beach, California.