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RENEE MONTAGNE, HOST:

Let's talk more about where Rick Santorum stands and about his rivals, with NPR's national political correspondent Mara Liasson. Good morning.

MARA LIASSON, BYLINE: Good morning, Renee.

MONTAGNE: Now, we just heard from Sonari that Rick Santorum has surged in Michigan, and that would be, of course, Mitt Romney's native state. And that is one that Romney really cannot afford to lose. So what is he doing to stop Santorum, as of today, and what's it looking like?

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RENEE MONTAGNE, HOST:

This is Morning Edition from NPR News. I'm Renee Montagne.

Senegal, on the coast of West Africa, has been something of a model of stability for a region known for its volatility. But this past week has brought protests and violence to Senegal after demonstrations over a presidential election this coming weekend led to clashes with riot police. We've got NPR's Ofeibea Quist-Arcton on the line from the capital Dakar to tell us what is going on there.

Good morning, Ofeibea.

Renee Montagne has business news.

One tool doesn't fit all when it comes to surgery.

Pediatric surgeons know this all too well when it's time to operate on a baby. Some infants are born prematurely. Others have congenital defects — some part of their internal anatomy that just didn't develop the way it was supposed to.

Nineteen-year-old Army Pvt. Cody Dollman has a look in his eyes that makes you think he probably used to fight much bigger kids on the playground back home in Wichita, Kan. He says he always wanted to be a soldier — both his grandfathers served in the military — but he's the first in his family to see action overseas.

NPR's Michele Kelemen is a former employee of Voice of America.

Russian anti-corruption crusader Alexei Navalny has been the victim of many dirty tricks by pro-Kremlin media.

But when the U.S. government-funded Voice of America published an online interview that had him criticizing other Russian opposition figures, Navalny quickly tweeted that the interview was a fake.

"It seems the VOA has gone nuts," he wrote to his Twitter followers.

Parents and doctors around the world have been alarmed by the dramatic increase in childhood asthma.

One factor in the upswing is better detection by doctors, but at least one doctor thinks a common over-the-counter drug also has something to do with it.

European finance ministers are expected to vote on the latest $171 billion bailout package for Greece Monday. The package needs to be approved so Greece can make payments on bonds that come due a month from now. Even if the bailout is approved, it is likely to be only a temporary solution to Greece's troubles.

Across the Atlantic in New York, Hans Humes likes to ride his bike from his home in Brooklyn to his office at Greylock Capital Management in Manhattan. On a recent morning he showed up for our interview still carrying his bike helmet.

One of the most talked about personalities on the Republican presidential campaign trail, Callista Gingrich, rarely says a word. That hasn't kept her out of the spotlight, though. From their hair to their home life, potential first ladies get attention on the campaign trail.

Earlier this month, the National Action Party of Mexico nominated the country's first ever female presidential candidate, economist Josefina Vazquez Mota. As Vazquez Mota accepted the nomination, she vowed to be the first woman to become the Mexican head of state.

The PAN, as the conservative party is known in Spanish, is Mexico's current ruling party. It has also put forth a woman, Isabel Miranda de Wallace, in Mexico City's mayoral race. Both elections take place on July 1.

Tracy Grant was just 39 when she got the diagnosis.

"They asked me to stay a little bit longer because they saw something a little weird," she remembers. "In my mind I was saying, ... 'Here we go, this doesn't look good.' "

It was breast cancer. As devastating as the news was, it wasn't a surprise. Her mother, Catherine Grant, was diagnosed at age 51.

Among the thousands of U.S. military men and women still fighting in Afghanistan, many will have their missions cut short by serious injury. Quickly airlifting them out of the war zone requires teams of specially trained medical personnel. Cheri Lawson of WNKU spent the day at a Cincinnati, Ohio, hospital where the rigorous training takes place.