Default-piece-image-0 In this Metro Matters episode, Next American City Editor-at-Large Diana Lind interviews the Brookings Institution’s Amy Liu about how New Orleans has transformed in the five years since hurricane Katrina.  Liu shares many promising developments, including the city’s bold reform of its public schools and healthcare system, and the increasing presence and capacity of nonprofits and community organizations. But she also talks about the challenges remaining for the city, including the long-standing difficulties in transforming its economy, lagging educational attainment and the ongoing effects of the oil spill.