NYC's Skyline and Unmistakable Grid, How the Koch Brothers Manipulate American Elections

Michael Kimmelman talks about the new buildings going up in New York, and what's leaving our city this year. Gerard Koeppel tells us about the 19th century urban planning that led to Manhattan's unmistakable grid. Jane Mayer reveals how billionaires like the Koch brothers have worked to fundamentally alter the American political system. Gerard Schwarz, music director and conductor, talks about Season 2 of his "All-Start Orchestra" television series.