RAY SUAREZ ANCHORS. This week, Need to Know reports on Chicago's crumbling infrastructure and Mayor Rahm Emanuel's controversial plan to fix it by partnering with business and not raising taxes. Ray Suarez interviews Ed Rendell, former Governor of Pennsylvania and Mayor of Philadelphia, about the scalability of Chicago's infrastructure plan for other cities. In our American Voices segment this week, Garrett Ebling, a survivor of the 1-35 bridge collapse in Minneapolis, talks about raising the awareness of the nation's infrastructure problem.