A woman votes in the first round of the Tunisian presidential election on Nov. 23. The election went smoothly, but no candidate won 50 percent of a vote, forcing a runoff between the top two on Sunday. Hassene Dridi/AP hide caption

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Thousands gathered on the National Mall last week to protest the deaths of Eric Garner and Michael Brown. Some law students say their involvement in the protests means their exams should be postponed. Saul Loeb/AFP/Getty Images hide caption

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"I didn't want to fire things up," St. Louis County prosecutor Robert McCulloch says of his silence since announcing the grand jury's decision not to indict Ferguson police officer Darren Wilson in the shooting death of Michael Brown. Pool/Getty Images hide caption

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Lactobacillus acidophilus, which is one variety of the genus Lactobacillus is one of the common active cultures found in yogurt and in the human gut. Scimat Scimat/Getty Images/Photo Researchers hide caption

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Keith Herie is swamped in debt from medical issues he and his wife encountered starting about a decade ago. Heartland hospital is seizing 10 percent of his paycheck and 25 percent of his wife's wages, and has placed a lien on their home. Steve Hebert for ProPublica hide caption

itoggle caption Steve Hebert for ProPublica

Cubans try to connect to the ETECSA server during a May 9 service outage as they wait with other customers outside the offices of the state telecom monopoly in Havana, Cuba. Cuba's government has blamed technological problems on a U.S. embargo. Critics of the government have said it deliberately strangles the Internet to mute dissent. Changing U.S.-Cuba relations may prove who's right. Franklin Reyes/AP hide caption

itoggle caption Franklin Reyes/AP