Robert Kirshner; Paul Volcker Biography, Pt. 2; Laurie Anderson

Astronomy professor at Harvard University Robert Kirshner presents his new book, "The Extravagant Universe: Exploding Stars, Dark Energy, and the Accelerating Cosmos." The conversation with former Federal Reserve Chairman Paul Volcker and author Joseph Treaster, who recently published a biography of Volcker continues. Artist in Residence at NASA Laurie Anderson reminisces about the New York of her youth and shares her ongoing project, "New Music New York."