"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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FBI Director James Comey says new encryption features allow people "to place themselves beyond the law." Alex Wong/Getty Images hide caption

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Tony Zhou's essay on the dilemma directors face integrating new technologies references this scene from the BBC TV series Sherlock, in which text messages are depicted on screen. YouTube/A Brief Look at Texting and the Internet in Film hide caption

itoggle caption YouTube/A Brief Look at Texting and the Internet in Film

A recent UCLA study found that screen time could negatively affect children's ability to read emotion. But scientists are still unsure how much screen time is too much for a child. Anatoliy Babiy/iStockphoto hide caption

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Jean Jennings (left) and Frances Bilas set up the ENIAC in 1946. Bilas is arranging the program settings on the Master Programmer. Courtesy of University of Pennsylvania hide caption

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A venture capital firm is using the power of big data to target entrepreneurs before they even create startups. iStockphoto hide caption

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