The Japanese supercomputer K, pictured in June 2012 at the RIKEN Advanced Institute for Computational Science in Kobe, western Japan. The K computer is currently ranked No. 3 on a list of the 500 fastest supercomputers. Kyodo/Landov hide caption

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A piece of a wing, apparently from a Boeing 777, has been found on Reunion, an island in the Indian Ocean. It's not clear yet whether the debris is from the Malaysia Airlines jet that disappeared from radar during a flight last year. Yannick Pitou/AFP/Getty Images hide caption

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Customers try out cellphones and tablets in a store in Tehran, in 2012. Financial sanctions make it difficult for U.S. firms to do business in Iran, analysts say. Vahid Salemi/AP hide caption

itoggle caption Vahid Salemi/AP

Comedian Ari Shaffir performs at the 2015 Bonnaroo Music and Arts Festival in June in Manchester, Tenn. Shaffir has said fellow comedian Carlos Mencia stole his joke about who would build a fence on the U.S.-Mexican border. Copyright on jokes is difficult to prove, and it turned out two other comedians had made similar jokes as well. John Davisson/Invision/AP hide caption

itoggle caption John Davisson/Invision/AP

Greg Gianforte is distributing a brochure urging workers to "come home to Montana" and telework from there. Marianne Wiest/BetterMontanaJobs.com hide caption

itoggle caption Marianne Wiest/BetterMontanaJobs.com

To selfie, or not to selfie? iStockphoto hide caption

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