Apple CEO Tim Cook, Anderson Coopers New Book on the Astor Family, 50 years of MS. Magazine

Hosted by Jane Pauley. In our cover story, John Dickerson talks with Apple CEO Tim Cook about his company's clean energy goals. Plus: Rita Braver interviews Gloria Steinem about the history of Ms. Magazine, whose first 50 years are the subject of a new anthology; Nancy Giles profiles businesswoman Sheila Johnson; Kelefa Sanneh talks with Anderson cooper about his book on the Astor dynasty; and Erin Moriarty recounts the odyssey of Pennsylvania prison escapee Danelo Cavalcante.