the mercedes-benz summer event ends july 31st. >> in the world of education, geoffrey canada is consideredk star. with his project, the harlem children's zone, canada has flooded 97 square blocks of manhattan with a wide variety of free social, medical, and educational services for over 11,000 children, including some living outside the zone. in 2012, he'll spend $95 million, 2/3 of which will come from the private sector. ed bradley first met geoffrey canada in 2005, but back then, there was no way to tell if the zone was working. now the results are in, and as anderson cooper reported in 2009, they are very impressive. for geoffrey canada, however, it's only just the beginning. >> you grow up in america, and you're told from day one this is the land of opportunity, that everybody has an equal chance to make it in this country, and then you look at places like harlem, and you say, "that is absolutely a lie." >> so you're trying to level the playing field between kids here in harlem and, what, middle-class kids in a suburb? >> that's exactly what we think we have to do. you know, if you gr