Hurricane Sandy: What we have left to improve, prepare for

      |After Katrina, Hurricane Sandy is the second costliest hurricane in U.S. history. For many residents of the northeast, the one-year anniversary of the storm is a painful reminder of how dangerous and damaging it was. Sheri Fink, "Pulitzer Prize winning author of "Five Days at Memorial," joins "CBS This Morning: Saturday" to discuss what we've learned from these fierce storms.