Pope Francis is cheered by faithful during an audience with the Holy See's employees in the Paul VI hall at the Vatican, Monday, Dec. 22, 2014. (AP Photo/Alessandra Tarantino)
Winners of a Spain lottery celebrate the first Christmas lottery prize El Gordo (The Fat One) in La Eliana, near Valencia, eastern Spain, Spain, Monday Dec. 22, 2014. The drawing is underway in Spain for the world's biggest lottery payoff, a euro2.5 billion ($3 billion) pot of cash that will be divided among thousands of ticketholders. The top prize for this year's "El Gordo" (The Fat One) drawing are tickets that will win euro400,000 ($490,000).(AP Photo/Alberto Saiz)
Visitors are silhouetted with decorated lights on trees to celebrate the upcoming Christmas and New Year at Garden of Morning Calm in Gapyeong, South Korea, Monday, Dec. 22, 2014. Christmas is one of the biggest holidays in South Korea. (AP Photo/Ahn Young-joon)
A man dressed as Santa Claus walks on the wall of the Old City in Jerusalem Monday, Dec. 22, 2014. (AP Photo/Dusan Vranic)
The scene in Glasgow's George Square after it is understood a bin lorry crashed into a group of pedestrians which has left six people dead. PRESS ASSOCIATION Photo.
A couple of Russian Army helicopters fly over the Monument to Scuttled Ships, during a promotional campaign for contract service for Russian Army in Sevastopol, Crimea, Saturday, Dec. 20, 2014. Russia on Saturday dismissed new U.S. sanctions as useless and said it was poised to wait as long as it takes for the U.S. to recognize its historic right to the Crimean peninsula. (AP Photo/Max Vetrov)
Undated handout photo issued by FMCM of Patrick Woodhead launching his spellbinding thriller 'Beneath the Ice' in Dronning Maud Land in Antarctica in a snow cave, it is the most Southerly book launch in the world to have ever taken place. PRESS ASSOCIATION Photo.
Farmer protesters sit on the ground in front of a line of armed police during their protest at the site of the Letpadaung copper-mine near Monywa in northwestern Myanmar Monday, Dec. 22, 2014. A woman was fatally shot Monday during a crackdown on protesters at the controversial Chinese-backed copper mine, activists and an opposition lawmaker said. (AP Photo)
The orangutan named Sandra sits in her enclosure at Buenos Aires' Zoo in Buenos Aires, Argentina, Monday, Dec. 22, 2014. An Argentine court has ruled that Sandra, who has spent 20 years at the zoo, should be recognized as a person with a right to freedom. (AP Photo/Natacha Pisarenko)
In this handout provided by the Korea Hydro and Nuclear Power Co., Workers of the Korea Hydro and Nuclear Power Co. participate in anti cyber attack exercise at Wolsong power plant on December 22, 2014 in Gyeongju, South Korea. The state-run nuclear power plant operator Korea Hydro and Nuclear Power Co (KHNP) ran simulation drills today to prepare for more cyber-attacks after their data were leaked on a blog and to a Twitter account under the profile "president of anti-nuclear reactor group." Getty Images
Choristers of the St Paul's Cathedral Choir rehearse for their Christmas carol service at St Paul's Cathedral on December 22, 2014 in London, England. The Christmas Eve Carol Services at the Cathedral will take place on Sunday December 24th. (Photo by Dan Kitwood/Getty Images)
Brazilians ride on a boat to view the world's largest floating Christmas tree on December 21, 2014 in Rio de Janeiro, Brazil. The tree is 85-meters tall and features over 3 million light bulbs. (Photo by Mario Tama/Getty Images)
Chen Long of China celebrates beating Hans-Kristian Vittinghus of Denmark in the Final of the Men's Singles on day five of the BWF Destination Dubai World Superseries Finals at the Hamdan Sports Complex on December 21, 2014 in Dubai, United Arab Emirates. (Photo by Warren Little/Getty Images for Falcon)
Police officers line-up to pay their respects at a memorial during a vigil for two New York City police officers at the location where they were killed, December 21, 2014 in New York City. The police officers were shot execution style Saturday afternoon as they sat in their marked police car on a Brooklyn street corner. (Photo by Spencer Platt/Getty Images)
Jiff the Pomeranian attends Y100s Jingle Ball 2014 at BB&T Center on December 21, 2014 in Miami, FL. (Photo by Gustavo Caballero/Getty Images for iHeartMedia)
Kyle Beall walks on a slackline between two cliffs at Diamond Bay on December 21, 2014 in Sydney, Australia. Slacklining is a balance sport in which participants walk on a flat nylon webbing anchored between two points with the tension adjusted to allow for slack, providing an experience similar to that of walking on a trampoline. (Photo by Cameron Spencer/Getty Images)