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

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Feminist critic Anita Sarkeesian, seen here filming her Tropes vs. Women web series, recently canceled a talk at Utah State University after the school received threats of a mass shooting at the event. Jonathan McIntosh hide caption

itoggle caption Jonathan McIntosh

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

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Corn farmer Jerry McCulley sprays the weedkiller glyphosate across his cornfield in Auburn, Ill., in 2010. An increasing number of weeds have now evolved resistance to the chemical. Seth Perlman/AP hide caption

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A school official shows a pupil an infrared digital laser thermometer before taking his temperature in Lagos, Nigeria, in September. Starting this week, similar hand-held devices are checking foreheads for fever at some U.S. airports. Akintunde Akinleye/Reuters/Landov hide caption

itoggle caption Akintunde Akinleye/Reuters/Landov

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

itoggle caption iStockphoto