Pedestrians cross the street in Nogales, Mexico, near the border with Arizona. A U.S. Border Patrol agent shot and killed a 16-year-old boy who was throwing rocks near the border fence last month. Ross D. Franklin/AP hide caption

itoggle caption Ross D. Franklin/AP

Students Blake Jamar (from left), Ryan Clifton and Gregory Gonzales take apart a bicycle that generates electricity at Analy High School in Sebastopol, Calif. Jon Kalish for NPR hide caption

itoggle caption Jon Kalish for NPR

After the House Intelligence Committee hearing on Benghazi Friday, Rep. Peter King said he felt U.N. Ambassador Susan Rice's comments after the attack may have been sanitized. Mladen Antonov/AFP/Getty Images hide caption

itoggle caption Mladen Antonov/AFP/Getty Images

Online privacy advocates are hopeful the FBI investigation into retired Gen. David Petraeus' personal emails will put a human face on their efforts to update a stalled Internet privacy bill. iStockphoto.com hide caption

itoggle caption iStockphoto.com