Japan’s Ayaka Shimookawa, left, competes with Maya Lawrence, of the United States, during a women’s individual epee qualifying match at the World Fencing Championship in Catania, Italy, Oct. 10, 2011. (Antonio Calanni/AP Photo)

Christopher Sims walks into a news conference to talk about his and Thomas Sargent’s winning of the Nobel Prize in economics, at Princeton University, Oct. 10, 2011, in Princeton, N.J. (Julio Cortez/AP Photo)

Libyan revolutionary fighters gather during a battle against troops loyal to former leader Moammar Gadhafi in the town of Sirte, Oct. 8, 2011. Libya’s revolutionary forces seized a convention center Sunday that had served as a key base for fighters loyal to Gadhafi in the fugitive leader’s hometown, as they squeezed remaining regime loyalists in the besieged coastal city. (Ahmad al-Rubaye/AFP/Getty Images)

Greenpeace activists stage a protest outside the Greek Ministry of Development and Marine against the use of factory trawlers for fishing in the Greek seas, Oct. 10, 2011. Factory trawlers use their huge nets to indiscriminately catch everything in their path, effectively strip-mining the oceans of marine life according to Greenpeace. (Louisa Gouliamaki/AFP/Getty Images)

Mischa Zverev of Germany returns the ball during his match against Donald Young of the United States at the Shanghai ATP Masters 1000 tennis tournament in Shanghai, China, Oct. 9, 2011. Young won 6-3, 6-4. (Alexander F. Yuan/AP Photo)

Marchers advance towards the Bolivian capital on the outskirts of Caranavi, Bolivia, Oct. 9, 2011. Indigenous and environmentalist groups began an estimated 242-mile march from Trinidad to La Paz Aug. 15, in a protest to a planned highway by the Bolivian government that would cut through the nature preserve Territorio Indigena Parque Nacional Isiboro Secure home of 15,000 natives. (Juan Karita/AP Photo)

A boy jumps between roof domes as he plays during the annual Tbilisoba City Day celebration in Tbilisi, Georgia, Oct. 8, 2011. (Shakh Aivazov/AP Photo)

Relatives of one of the Copts who were killed during clashes with the Egyptian army mourn over his coffin outside of the Copts’ hospital in Cairo, Egypt, Oct. 10, 2011. Egypt’s Coptic church blasted authorities for allowing repeated attacks on Christians as the death toll rose to more than two dozen, most of them Christians who were trying to stage a peaceful protest over an attack on a church. (Khalil Hamra/AP Photo)

Bhutanese students hold umbrellas as they practice a dance to be performed during the wedding festivities of King Jigme Khesar Namgyal Wangchuck and future Queen Jetsun Pema, in the capital of Thimphu, Bhutan, Oct. 10, 2011. The 31 year-old reformist monarch of the small Himalayan Kingdom will wed his commoner bride later this week. (Kevin Frayer/AP Photo)