Barcelona football star Lionel Messi (right) leaves a courthouse in Gava, Spain, in September 2013, after a hearing on tax evasion charges. Messi and his father paid $6.5 million to try to settle the case, but his father may still go on trial. Josep Lago/AFP/Getty Images hide caption

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Nineteen-year-old Bosnian Serb Gavrilo Princip fired the shots that killed the heir to the Austro-Hungarian empire, Archduke Franz Ferdinand, and his wife, Sophie, during a visit to Sarajevo on June 28, 1914. Depending on whom you ask, he's either a hero or a terrorist. Historical Archives Sarajevo/AP hide caption

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A doctor vaccinates a child against polio at a health clinic in Damascus, Syria, on Nov. 6. To stop the disease from spreading beyond Syria, health officials plan to vaccinate 20 million children in the region. Youssef Badawi/EPA /LANDOV hide caption

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Mario Draghi, president of the European Central Bank. Some say he's super. Daniel Reinhardt /DPA/LANDOV hide caption

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Ava Gene's, a Roman-inspired restaurant in Portland, Ore., incorporates colatura, a modern descendant of ancient Roman fish sauce, into several of its dishes. Deena Prichep/NPR hide caption

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A woman holds up a picture of a 5-year-old girl who disappeared in May in Clermont-Ferrand, in central France. As estimated 250,00 kids go missing each year in Europe, according to the European Union. Many are runaways that are later found, though there are also cases involving small children who are abducted. Thierry Zoccolan/AFP/Getty Images hide caption

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Massive government surveillance of Americans' phone and Internet activity is drawing protests from civil liberties groups, but major legal obstacles stand in the way of any full-blown court hearing on the practice. Among them: government claims that national security secrets will be revealed if the cases are allowed to proceed. Patrick Semansky/AP hide caption

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Migrants arrive in Valletta, the Maltese capital, aboard a patrol boat on Oct. 12, a day after their boat sank, killing more than 30 people, mostly women and children — just the latest deadly migrant tragedy to hit the Mediterranean. Despite Europe's financial crisis illegal immigrants continue to attempt to enter Europe through its southern coastal countries as they seek a better life. AFP/Getty Images hide caption

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