The 82-year-old British actor is currently playing Shakespeare's famed tragic figure on Broadway — a role traditionally played by a man. "As we get older, those absolute barriers that define gender begin to crack," she says. Jackson took a 23-year break from acting when she was elected to Parliament in 1992. Also, linguist Geoffrey Nunberg talks about the true meaning of the s-word: "socialism." And 'New York Times' baseball writer Tyler Kepner spoke to 22 hall-of-fame pitchers about what they throw, and how they get a mental edge over hitters. His new book is 'K: A History of Baseball in Ten Pitches.'