Morning Edition from NPR

In the second part of his interview, Steve Inskeep talks to author Robert Caro about the process he goes through in writing his biographies of Lyndon Baines Johnson. The Passage of Power is the fourth volume of Caro's massive biography of Johnson.

Wal-Mart remains under a cloud after The New York Times reported the retailers expansion in Mexico involved systematic bribes. To get a sense of how that might play out, Steve Inskeep talks to Peter Solmssen, a managing board member and general counsel for Siemens. The German engineering and electronics conglomerate was involved in its own bribery scandal.

South Sudan is the country that voted to break away from Sudan. They've been jostling for control of border zones, including oil fields. And just as the two sides were sitting down to negotiate, fighting broke out.

Republican Sen. Kelly Ayotte of New Hampshire is the latest politician to appear on the campaign trail with presumed Republican presidential nominee Mitt Romney. That's fueled speculation that Ayotte is being considered as a running mate.

The average caregiver is 49 years old. Cheryl Matheis, senior vice president for policy at AARP, tells Steve Inskeep when a worker has to leave their job to care for a relative, they lose on average $325,000 in lifetime income — from lost wages, Social Security and pensions.