This is WEEKEND EDITION from NPR News. I'm Scott Simon. A federal judge in Arizona has ruled against the man who calls himself America's toughest sheriff. The judge ruled that the Maricopa County Sheriff's Department has used racial profiling to enforce the state's tough immigration laws. Sheriff Joe Arpaio has maintained that his department has the authority to round up undocumented immigrants. NPR's Ted Robbins has been following the case and joins us now. Ted, thanks for being with us.
Hundreds of volunteers have come to Moore, Okla., to help the community following Monday's tornado. Some are helping clear debris, others bringing out water and supplies to people whose homes were damaged or destroyed, and whose lives are in disarray. One group of volunteers is cooking more than 10,000 meals a day.
Nearly 18 million tourists descend on our nation's capitol every year, and most of them are keen to spend time at the many free museums in Washington, D.C. But only about 100,000 people take the trip across the river to a museum of a different sort: the Pentagon. The Pentagon's exhaustive historical displays offer fresh insight into the range of the Defense Department's activities.
When huge tornadoes, like the one that hit Moore, churn, swirl and scream, most people run for cover. Then there are people like Val Castor, who jumps into his truck and heads straight towards it. Mr. Castor is the senior storm tracker for Channel 9 News in Oklahoma City. He's been covering Oklahoma's temperamental and often treacherous weather for the last 22 years. Val Castor, we had the honor of spending a little time with you in your truck a couple of years ago. Thank you for being with us today.
The Cleveland story. The escape of three women who were kidnapped and held captive for 10 years has attracted notice around the world. Of course, it's also an all-consuming local story. And the Cleveland Plain Dealer provided continuous coverage along with in-depth profiles of the three women, the neighborhood where they were held captive, and the man who allegedly kidnapped them.
This weekend at Carnegie Hall, a giant returns to the podium. James Levine will lead the Metropolitan Opera Orchestra for the first time in two years after a string of health challenges from shoulder injuries to spinal problems. He's considered by at least one critic to be the most influential American conductor since Leonard Bernstein. That critic is Anthony Tommasini, lead classical musical critic for the New York Times.
The University of New Hampshire professor announced this week he's come close to solving a centuries-old problem proving something called the twin prime conjecture. We asked our math guy, Keith Devlin, of Stanford University, to join us as he does now from their studios. Keith, thanks very much for being with us.
KEITH DEVLIN: Thank, Scott. Nice to be with you again.