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6:23 am
Sat May 18, 2013

Prime Challenge Sends Mathematicians On Infinite Search

Transcript

SCOTT SIMON, HOST:

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.

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WRKF
6:07 am
Sat May 18, 2013

Choose A Hearty Palm

Palms can stand up to hurricane winds, but can be sensitive to pruning and freezes.


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Environment
4:18 am
Sat May 18, 2013

Not Your Grandpa's RV: This Roving Lab Tracks Air Pollution

Ira Leifer, next to an RV he has outfitted with methane sensors and other equipment to sniff the air.
Richard Harris NPR

Originally published on Sat May 18, 2013 12:45 pm

If you're driving down the road someday and you come across a camper with a 50-foot periscope sticking up into the sky, you just might have crossed paths with Ira Leifer. His quirky vehicle is on a serious mission. It's sniffing the air for methane, a gas that contributes to global warming.

Leifer is an atmospheric scientist at the University of California, Santa Barbara. But you'll more often find him off campus, in a garage, next to a string of auto body shops near the airport.

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Law
4:17 am
Sat May 18, 2013

Turning Up The Heat On Civil Rights-Era Cold Cases

Originally published on Sat May 18, 2013 1:26 pm

Six years ago, the FBI took on a challenge: To review what it called cold-case killings from the civil rights era. The investigation into 112 cases from the 1950s and 1960s is winding down, and civil rights activists are weighing the FBI's efforts.

The review comes with word this week of the death of a man who'd been named, by a newspaper investigation, as a possible suspect in one notorious case.

The Case

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It's All Politics
4:13 am
Sat May 18, 2013

Immigration Bill Chugs Along, But Some See Deal-Breakers

The Senate Judiciary Committee meets to work on immigration legislation on May 9.
Michael Reynolds EPA/Landov

Originally published on Sat May 18, 2013 6:23 am

It's been a long slog already for the bipartisan immigration overhaul proposed by the Senate's Gang of Eight.

The legislation has been the target of more than 300 amendments during days of debate and votes by the Senate Judiciary Committee. But while the bill has largely held its own so far, its prospects for getting through Congress remain uncertain.

In Judiciary Committee Chairman Patrick Leahy's view, the immigration overhaul is "moving very well."

"It's moving a lot faster than people said it would," says Leahy, a Vermont Democrat.

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Parallels
4:13 am
Sat May 18, 2013

Afghan Mineral Treasures Stay Buried, Hostages To Uncertainty

An Afghan worker helps excavate part of the mountaintop copper works above the ancient city at Mes Aynak in February. Afghanistan is believed to be sitting on massive mineral and metal deposits. But many obstacles have prevented large-scale mining from getting underway.
Matthew C. Rains MCT/Landov

Originally published on Sat May 18, 2013 6:23 am

For years, reports have suggested that Afghanistan is sitting on massive deposits of copper, gold, iron and rare earth minerals valued up to $3 trillion. This provides hope for a future economy that would not have to rely so heavily on foreign donations.

But with an uncertain political, regulatory and security environment, international investors are hesitant. And it could be many years before Afghanistan begins extracting its mineral wealth.

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U.S.
4:13 am
Sat May 18, 2013

When Alcohol Takes The Wheel: What's Your Limit?

Originally published on Sat May 18, 2013 6:23 am

Transcript

SCOTT SIMON, HOST:

You can legally drink and drive in the United States, but there's a limit. In every state, drivers can't get behind the wheel if their blood alcohol content is .08 or higher, but the National Transportation Safety Board wants the states to lower the legal limit to .05 or even lower. Now, that would bring the United States into agreement with much of the rest of the world.

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Sports
4:13 am
Sat May 18, 2013

Sports: Playoffs, Hard Hits, Soccer Kicks

Originally published on Sat May 18, 2013 6:23 am

Host Scott Simon talks to ESPN's Howard Bryant about the NBA playoffs, Washington Nationals outfielder Bryce Harper's collision with a wall, and David Beckham's retirement from soccer.

Politics
4:13 am
Sat May 18, 2013

What A Week: White House Rattled By Controversy

Originally published on Sat May 18, 2013 6:23 am

Transcript

SCOTT SIMON, HOST:

This is WEEKEND EDITION, from NPR News. I'm Scott Simon. There are three simultaneous controversies rattling the Obama administration this week: the IRS, the phone records of the AP reporters, and Benghazi. NPR's White House correspondent Ari Shapiro joins us. Ari, thanks for being with us.

ARI SHAPIRO, BYLINE: My pleasure, Scott.

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Music Interviews
1:03 am
Sat May 18, 2013

Audra McDonald, A Broadway Star Gone Roaming, Comes Home

Audra McDonald's new album, Go Back Home, marks a return to her roots in musical theater.
Autumn de Wilde Courtesy of the artist

Originally published on Sun May 19, 2013 8:24 am

In the seven years since her last album, Audra McDonald has kept busy. She spent several years in Hollywood, filming the television series Private Practice. She's gotten divorced and remarried, absorbed the shock of losing her father in a plane crash and watched her daughter, Zoe, grow up from a kindergartener to a middle-schooler.

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