This is WEEKEND EDITION from NPR News, I'm Scott Simon. In the two weeks since the Internal Revenue Service scandal erupted, the acting commissioner has been ousted, the head of the relevant section has been put on administrative leave. The Justice Department has begun investigating the scrutiny given to conservative groups that sought tax exempt status and three congressional committees have held hearings bombarding IRS officials with questions.
Hundreds of volunteers have come to Moore, Okla., this week to help the community after Monday's deadly tornado. Some people are cleaning debris, others are bringing out water and supplies to people whose lives have been turned upside down. NPR's Kirk Siegler stopped by one volunteer-powered relief group that's working east of town.
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.
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.
This Memorial Day weekend, tens of thousands of tourists are descending on the nation's capital. Many will spend time inside of Washington, D.C.'s free museums. Only a small fraction will take the drive across the Potomac River to a museum of a different sort, that's in the Pentagon. NPR's Shula Neuman reports.
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.
A 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: Thanks, Scott. Nice to be with you again.