Palo Alto High School teacher Esther Wojcicki helps student Allison Wyndham at a computer during class. George Nikitin/AP hide caption

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Nkomo Morris, a teacher at Brooklyn's Art and Media High School, works on her classroom computer in New York. Bebeto Matthews/AP hide caption

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Data gleaned from e-readers gives writers a new kind of feedback to take into consideration — or ignore. iStockphoto.com hide caption

itoggle caption iStockphoto.com

A salesperson demonstrates the Apple iPhone 4 in New Delhi, India. While mobile device use is growing rapidly in emerging markets, Apple's current product line may prove prohibitively expensive for many consumers. Manish Swarup/AP hide caption

itoggle caption Manish Swarup/AP

Mariah Arostigue (left) and Noah Reyes, 11th-graders, chat as they work on their homework in a pre-calculus class at Segerstrom High School in Santa Ana, Calif. Jae C. Hong/AP hide caption

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Two young Syrian activists, Mohsen and Sara, say they met and fell in love on Facebook while monitoring the country's uprising. They didn't want their faces shown, but provided this photo, taken in the Old City of Damascus. Courtesy of Mohsen and Sara hide caption

itoggle caption Courtesy of Mohsen and Sara

Twitter announced its partnership with Vine, a video-sharing app that posts six-second videos onto a tweet, on Thursday, Jan. 24. Marie McGrory/NPR hide caption

itoggle caption Marie McGrory/NPR