Morning Edition

Buses took Boston area college students to a ski trip in Quebec, Canada. The buses were stopped on the way back, and Vermont state troopers cited 26 students for alcohol. In their defense, the drinking age in Quebec is 18, compared with 21 in the U.S. It was harder though to explain the drugs on board.

When California officials responded to a call in a wealthy Bay area suburb Tuesday, they found that an 85 lbs. German Shepherd named Cody had scared a mountain lion 30 feet up a tree. The dog is smaller than what big cats have been known to eat.

As part of Black History Month, President and Mrs. Obama hosted a musical celebration of the blues Tuesday night. Guests included legends like B.B. King and Mick Jagger.

On the day she was born, Fawzia Koofi nearly died after being left outside in the unrelenting Afghan sun. But against all odds, Koofi survived and went on to become Afghanistan's first female deputy speaker of Parliament. Today, Koofi's name is floated in discussions about whether Afghanistan is ready for a first female president.

Just about three years after he violently assaulted her, R&B singer Chris Brown is back with pop star Rihanna — musically, at least. On Monday night, each released a new version of a previously released song. Both remixes feature the other party, and both are causing quite the stir.

A couple who met working in a book store in Denver have spent their marriage amassing books about their passion: nature. Now the house they live in is up for sale, and they're scrambling to find storage for 30,000 books.

Pakistani workers at an Air Force factory are making a low-budget tablet computer. With Pakistani engineering and Chinese hardware, they make their version of Apple's iPad. The copy is the PACPAD.

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RENEE MONTAGNE, HOST:

This is MORNING EDITION, from NPR News. I'm Renee Montagne.

STEVE INSKEEP, HOST:

And I'm Steve Inskeep. Good morning.

One more Arab nation is changing a longtime leader. Yemen's president for 33 years was Ali Abdullah Saleh. Today, millions of Yemenis vote. And they're being asked to ratify a plan under which Saleh's vice president will replace him. NPR's Kelly McEvers is in Yemen's capital Sana'a.

And, Kelly, where exactly are you in the capital city?

The film Saving Face is nominated for an Oscar. It chronicles the lives of acid-attack survivors in Pakistan. Filmmaker Sharmeen Obaid Chinoy talks to Renee Montagne about what happens to some of the victims.

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STEVE INSKEEP, HOST:

Some new research throws into question things we say all the time about the Internet. The research focuses on Twitter, the service that lets many millions of people send short messages to each other from computers or cell phones. It's commonly said that social networking like this is revolutionary, that it's created new communities, even that it's obliterated geography. You can connect with people who share common interests, not just people who happen to live nearby. NPR's Shankar Vedantam is here to explode all that. Hi, Shankar.

Steve Inskeep has the Last Word in business.

Rhythm in music is about timing — when notes start and stop. And now scientists say they've found a curious pattern that's common to musical rhythm. It's a pattern also found in nature.

There area a lot of bad movies out there. Some movies are so bad that they're good. For some reason people love them. Is there an art to making films that are deliberately bad? Can a company be successful by producing bad movies?

Forty years ago Tuesday, President Richard Nixon became the first U.S. president to visit China. Renee Montagne looks back on that day in 1972.

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(SOUNDBITE OF MUSIC)NPR's business news starts with lower European markets.) Transcript provided by NPR, Copyright National Public Radio.

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(SOUNDBITE OF SONG, "SWING LOW, SWEET CHARIOT")(Singing) Swing low, sweet chariot, coming for to carry me home. Swing low...) Transcript provided by NPR, Copyright National Public Radio.

The March issue of the medical journal Pediatrics features an editorial looking at gender identity disorder in children. Pediatricians apparently are seeing more young patients who express an interest in changing their gender.

The financial battle for the Republican nomination is tightening. Candidates spent a lot of cash in January — what with contests in Iowa, New Hampshire, South Carolina and Florida. Also spending a lot of money, as it turns out, were the richly financed superPACS that support the candidates.

Reports filed at the Federal Election Commission on Monday night show just how important a superPAC can be.

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RENEE MONTAGNE, HOST:

A 150 lbs. emu escaped from its pen five weeks ago, and it's been spotted several times. Last week, the flightless bird was seen outside an elementary school. A maintenance worker there tried to lasso the elusive emu with an extension cord, but the big bird got free.

Renee Montagne has business news.

Renee Montagne has business news.

Former Pennsylvania Senator Rick Santorum has been the hot story in the GOP presidential contest this month. Over the weekend, Santorum raised eyebrows with comments on public education, prenatal testing and what he called President Obama's "phony theology." Santorum was making waves just days ahead of the next Republican debate on Wednesday, and the next primaries in Michigan and Arizona six days later.

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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.

Call it the resurrection of the timeslot of death.

For years, Friday nights have carried a grisly reputation — where shows on broadcast networks are sent to die. But a certain kind of cable show has recently performed well — even really well — on Friday nights.