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The police department is investigating, a spokesman says. Meanwhile, it has released videos of its own showing protesters threatening officers during recent clashes.

Even with a government shakeup, markets are still worried that Italy is headed toward default. The interest rate on the country's debt has shot up to 7 percent and with an economy as big as Italy, there may be no will — or money — for a European Union rescue.

Italy's borrowing costs spiked Wednesday, pushing the country into bailout territory. But Italy is too big to be saved by Europe's bailout fund. Although the same story has played out in other European countries, an Italian default could be catastrophic.

The U.S. deported a record number of illegal immigrants last year. Many were released in Mexico's dangerous border cities, which are struggling to provide even temporary shelter.

Christine Lagarde said the world economy has entered a "dangerous" phase and called for bold action.

NPR spoke with nearly two dozen Herman Cain campaign donors. Most say they don't believe the sexual harassment accusations and that they will consider giving more money to his campaign; two said they already had. But others are wavering, ever so slightly.

A pair of researchers propose that the shape of the ear might have something to do with it.

Huntsville is the shining star in Alabama's economy. Scientists there designed the rockets that put man on the moon. In the past 50 years, it's become a magnet for high-tech space and defense jobs. But with NASA downsizing and the specter of defense cuts looming, Huntsville finds itself in limbo.

A letter found deep in archives in London has helped settle the debate over who deserves credit for what many say is the most important astronomical discovery of the 20th century: the realization that the universe is expanding.

President Obama will have to persuade a global audience that the U.S. remains a pre-eminent world leader, even though he is presiding over a politically gridlocked government that is so far unable to hoist the U.S. economy out of its own economic slump.