Terry Gross

More than half of all employed people worldwide work off the books. And that number is expected to climb over the next decade. Investigative journalist Robert Neuwirth examines how the underground economy works in his book, Stealth of Nations.

After Steve Jobs was diagnosed with cancer, he asked Walter Isaacson to write his biography. The new book tells the personal story of the man behind the personal computer — from his childhood in California to his thoughts on family, friends, death and religion.

The actor plays a righteous federal agent who succumbs to all sorts of temptations on the HBO drama Boardwalk Empire. To build the character of Nelson Van Alden, he says, he worked out an elaborate back story about the agent's childhood.