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New strains are emerging between China and its old ally, North Korea, six months after the death of reclusive North Korean leader Kim Jong Il. The recent North Korean hijacking of Chinese fishing boats has shaken those ties considerably, leading to public pressure on China to stand up to North Korea.

Fishing boats returning to their home port in China don't normally make the news. But they did last month, because three boats — and 28 fishermen — had been detained for almost two weeks in North Korea.

Enter the glorious Rose Reading Room on the third floor of the New York Public Library on a weekday afternoon, and you'll find almost every chair filled.

Scholars and researchers still submit their book requests on slips of paper and wait for their numbers to appear on two large boards.

The stacks, filled with some 3 million volumes, are closed to the public, so books are retrieved from seven floors of shelving below. Still other volumes are stored off-site.

NPR Morning Edition host Steve Inskeep is taking a Revolutionary Road Trip across North Africa to see how the countries that staged revolutions last year are remaking themselves. Steve and his team are traveling some 2,000 miles from Tunisia's ancient city of Carthage, across the deserts of Libya and on to Egypt's megacity of Cairo. Near the Libyan coastal city of Misrata, he looks at violence that took place after the revolution.

When Dr. Barbara Natterson-Horowitz was asked to treat an exotic little monkey with heart failure at the Los Angeles Zoo, she learned that monkeys can suffer heart attacks from extreme stress — just like humans. That's when the cardiologist realized she'd never thought to look beyond her own species for insights into disease.

Voters in southeastern Arizona go to the polls Tuesday in a special election to fill the rest of the congressional term of former Rep. Gabrielle Giffords.

Giffords, a Democrat, resigned in January, a year after she was critically wounded in a shooting rampage. Running to fill the remaining six months of her term are her former aide, Ron Barber, and Republican Jesse Kelly, a businessman and Iraq War veteran.

The special election has echoes of the 2010 congressional campaign in the Tucson-based 8th Congressional District.

In Harlem, a legendary congressman — one of the most influential black politicians in modern history — faced a difficult re-election as allies backed his younger opponent in demanding a changing of the guard.

That was in 1970, when challenger Charles Rangel defeated Rep. Adam Clayton Powell Jr., a mythic figure undone by scandal and frustrated constituents.

Now, 42 years later, Rangel is the iconic lawmaker contending with perhaps his toughest re-election against challengers from within his own party who say his time has passed.

The details sound like something out of a bad science-fiction movie.

A freezer storing human brains for research went on the fritz, and nobody at the Harvard Brain Tissue Resource Center knew for days. Two separate alarms that should have alerted staff to the problem failed to sound late last month.

It's easy to romanticize the Sahara — a vast expanse of sand organized around the northern reaches of the Niger River. Part of that romance is captured in the music of singer and guitarist Sidi Touré, who composes songs in the folkloric tradition of the Songhaï people.

His new album of desert chamber music, Koïma, harkens back to the glory days of the Songhaï Empire, which ruled much of the region from the city of Gao in the 15th and 16th centuries.

A day after getting approval for a financial rescue he vowed Spain would never need, Prime Minister Mariano Rajoy said it was his idea all along.

"No one pressured me into this. I pushed for it myself, because I wanted a line of credit," Rajoy said. He refused to call it a "bailout." He called it a "victory" instead.

Most Spaniards don't buy that. In a poll published Sunday, 78 percent of respondents said they have "little or no" faith in Rajoy and his ruling conservatives. That's just six months after they won elections in a landslide.