Mourners carry the coffin of a victim of a bomb attack on a Baghdad cafe on Tuesday. Violence in Iraq has spiked this year. The bodies of 18 men were found Friday in a Sunni area near Baghdad. Sabah Arar/AFP/Getty Images hide caption

itoggle caption Sabah Arar/AFP/Getty Images

This colorfully illustrated French and Hebrew Passover Haggadah was published in Vienna in 1930. Caption on the image: "Eating Matzah." This restored document is part of an exhibit at the National Archives in Washington, D.C., that opens Nov. 8. National Archives hide caption

itoggle caption National Archives

Niels Tietze leads a group of veterans of the wars in Afghanistan and Iraq up the Snake Dike route on the western wall of Yosemite National Park's Half Dome. David P. Gilkey/NPR hide caption

itoggle caption David P. Gilkey/NPR

Mourners carry the coffin of a car bomb victim during the funeral in the Shiite holy city of Najaf, Iraq, last week. Violence is on the rise in Iraq, but it is receiving little international attention. AP hide caption

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Subway passengers affected by the sarin gas attack on Tokyo's subway system are carried into St. Luke's International Hospital in Tokyo on March 20, 1995. Thirteen people were killed and more than 6,000 injured in the attack, which was carried out by the Aum Shinrikyo cult. Chikumo Chiaki/AP hide caption

itoggle caption Chikumo Chiaki/AP