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The Fairfax County 911 Center in Virginia takes calls during Hurricane Sandy in 2012. It was relatively easy to locate callers when most people used landlines. But most 911 calls now come from cellphones, which can pinpoint a callers' location only within 100 to 300 meters. Greg E. Mathieson Sr./Mai/Landov hide caption

itoggle caption Greg E. Mathieson Sr./Mai/Landov

The phone company Vonage reported a drop in voice mail retrievals over the past year. Many of those ignoring voice mails are millennials. iStockphoto hide caption

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A customer sets up her new iPhone 6 at an Apple store in Beijing on Friday. A group says the Chinese government backed an attack against users of Apple's iCloud service, but the government denies the claim. Feng Li/Getty Images hide caption

itoggle caption Feng Li/Getty Images

Justin Nagelberg uses the Sa umbrella in New York City. By replacing the metal skeleton with two canopies, the design is lighter and has more headroom. Courtesy of Justin Nagelberg hide caption

itoggle caption Courtesy of Justin Nagelberg

Ramzi El-Fekih, CEO of Creova, stands in his server room in Tunis. He has built a mobile payments company, but because of banking restrictions, Tunisians can use his product only for domestic purchases. Aarti Shahani/NPR hide caption

itoggle caption Aarti Shahani/NPR

A technician opens a vessel containing women's frozen egg cells in April 2011 in Amsterdam. AFP/Getty Images hide caption

itoggle caption AFP/Getty Images

"The sexts are currency," explains Hanna Rosin. Teenage girls told Rosin boys collect the photos like "baseball cards or Pokemon cards." iStockphoto hide caption

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Microsoft says it's patching a Windows security flaw cited in a report on alleged spying by Russian hackers. Ted S. Warren/AP hide caption

itoggle caption Ted S. Warren/AP

Twitter is suing the federal government over First Amendment rights. The tech company says the government stopped it from releasing extra detail about government requests for user information. iStockphoto hide caption

itoggle caption iStockphoto