A truck drives down a highway on Salang Pass in Afghanistan's Parwan province in December. The Salang Tunnel, which crosses under the pass, provides a vital link between Central Asia and northern Afghanistan to Kabul. Qais Usyan/AFP/Getty Images hide caption

Anthony Gonzales graduated on Tuesday from Learning Works charter school in Pasadena, Calif. Learning Works hide caption

Some parents say the hardest part of flying with young kids on an airplane is dealing with unpredictable kids and adult passengers. iStockphoto.com hide caption

Utah Sen. Orrin Hatch and former state Sen. Dan Liljenquist talk before a debate at KSL NewsRadio in Salt Lake City on June 15. The two face each other in the Utah Republican primary on Tuesday. Laura Seitz/AP hide caption

Protesters are seen in June 2011 in support of the Tucson Unified School District's Mexican-American studies program. A new state law effectively ended the program saying it was divisive. Ross D. Franklin/AP hide caption

CABOMA members play guitar and mandolin on a summer afternoon. Devon Kodzis/NPR hide caption

Cassandra Wilson explores geography, as well as a lifelong relationship with the guitar, on Another Country. Marco Glaviano hide caption