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    - AP
    This photo provided by the Arizona Department of Transportation shows the buckling of U.S. 89, about 25 miles south of Page, Ariz., Wednesday Feb. 20, 2013. The Arizona Department of Transportation is rerouting motorist off the heavily traveled highway between Arizona and Utah on to other roadways. ADOT says what caused a 150-foot section of pavement to buckle is not related to the weather and might be what ADOT calls a "geologic event." (AP Photo/Courtesy of the Arizona Department of Transportation)
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    - AP
    This photo provided by the Arizona Department of Transportation shows the buckling of U.S. 89, about 25 miles south of Page, Ariz., Wednesday Feb. 20, 2013. The Arizona Department of Transportation is rerouting motorist off the heavily traveled highway between Arizona and Utah on to other roadways. ADOT says what caused a 150-foot section of pavement to buckle is not related to the weather and might be what ADOT calls a "geologic event." (AP Photo/Courtesy of the Arizona Department of Transportation)
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    Michael Schennum - AP
    Jeneri Martinez, 3, and her mother Emma, both of Scottsdale, play in the snow off of Cave Creek Rd. in the Desert Mountain area of north Scottsdale on Wednesday, Feb. 20, 2013. (AP Photo/The Arizona Republic, Michael Schennum)
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    Rivo Andries - AP
    Indonesian men put chain onto a young pig-tailed macaque as it is displayed for sale in Padang Pariaman, West Sumatra, Indonesia, Wednesday, Feb. 20, 2013. Macaques are commonly sold in the region to be trained to pick and harvest coconuts. (AP Photo/Rivo Andries)
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    Mindaugas Kulbis - AP
    Germany's team members include (no left - right available) Lucas Liss, Henning Bommel, Maximilian Beyer and Theo Reinhardt compete in the men's 4km Team Pursuit Qualifying race during the Track Cycling World Championships in Minsk , Belarus, Wednesday, Feb. 20, 2013. (AP Photo/Mindaugas Kulbis)
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    Michael Steele - Getty Images
    MINSK, BELARUS - FEBRUARY 20: Michael Hepburn (L) of Australia leads the men's team pusruit to gold during day one of the UCI Track World Championships at Minsk Arena on February 20, 2013 in Minsk, Belarus. (Photo by Michael Steele/Getty Images) *** BESTPIX ***
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    Mike Ehrmann - Getty Images
    VIERA, FL - FEBRUARY 20: Bryce Harper #34 of the Washington Nationals poses for a portrait during photo day at Space Coast Stadium on February 20, 2013 in Viera, Florida. (Photo by Mike Ehrmann/Getty Images) *** BESTPIX ***
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    David J. Phillip - AP
    Atlanta Braves pitcher Kris Medlen squints as he poses for a photographer during a spring training baseball picture day Wednesday, Feb. 20, 2013, in Kissimmee, Fla. (AP Photo/David J. Phillip)
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    Daniel Ochoa de Olza - AP
    A model displays an Autumn/Winter design by David Delfin during Madrid's Fashion Week, in Madrid, Wednesday, Feb. 20, 2013. (AP Photo/Daniel Ochoa De Olza)
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    Daniel Ochoa de Olza - AP
    A model displays an Autumn/Winter design by Agatha Ruiz de la Prada during Madrid's Fashion Week, in Madrid, Wednesday, Feb. 20, 2013. (AP Photo/Daniel Ochoa De Olza)
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    Daniel Ochoa de Olza - AP
    A model displays an Autumn/Winter design by Agatha Ruiz de la Prada during Madrid's Fashion Week, in Madrid, Wednesday, Feb. 20, 2013. (AP Photo/Daniel Ochoa De Olza)
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    Altaf Qadri - AP
    An Indian auto-rickshaw driver stands among dozens of auto-rickshaws parked during a nationwide strike called by trade unions in New Delhi, India, Wednesday, Feb. 20, 2013. Sporadic violence has broken out in India at the beginning of a two-day strike by labor unions protesting rising prices and government policies to open the economy. Millions of bank and factory workers stayed away from work and public transport was shut down Wednesday after India's major trade unions called the countrywide strike. (AP Photo/Altaf Qadri)
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    Altaf Qadri - AP
    A domesticated elephant walks beside a public bus in New Delhi, India, Wednesday, Feb. 20, 2013. There are an estimated 28,000 wild elephants in India, along with thousands of domesticated ones that do everything from performing in shows to carrying heavy loads in the country's big cities. (AP Photo/Altaf Qadri)
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    Sanjeev Syal - AP
    British Prime Minister David Cameron, center, walks barefoot during his visit to the Golden Temple, Sikh’s holiest shrine, in Amritsar, India, Wednesday, Feb. 20, 2013. Cameron also laid a mourning wreath at Jallianwala Bagh, the site of a notorious 1919 massacre of hundreds of Indians by British colonial forces. More than 300 Indians were killed during the massacre on unarmed Indians attending a rally, which galvanized the national independence movement. (AP Photo/Sanjeev Syal)
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    Gerald Herbert - AP
    An adult chimp plays with a young chimp at Chimp Haven in Keithville, La., Monday, Feb. 18, 2013. One hundred and eleven chimpanzees will be coming from a south Louisiana laboratory to Chimp Haven, the national sanctuary for chimpanzees retired from federal research. (AP Photo/Gerald Herbert)
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    Gerald Herbert - AP
    A mother chimp relaxes with her baby at Chimp Haven in Keithville, La., Tuesday, Feb. 19, 2013. One hundred and eleven chimpanzees will be coming from a south Louisiana laboratory to Chimp Haven, the national sanctuary for chimpanzees retired from federal research. (AP Photo/Gerald Herbert)
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    Eduardo Di Baia - AP
    Argentina's Velez Sarsfield's Ezequiel Rescaldini, right, vies for the ball with Chile's Deportes Iquique's Federico Leon during a Copa Libertadores soccer match in Buenos Aires, Argentina, Wednesday, Feb. 20, 2013. (AP Photo/Eduardo Di Baia)
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    Themba Hadebe - AP
    Olympic athlete Oscar Pistorius stands inside the court as a police officer looks on during his bail hearing at the magistrate court in Pretoria, South Africa, Wednesday, Feb. 20, 2013. A South African judge says defense lawyers will need to offer "exceptional" reasons to convince him to grant bail for Oscar Pistorius, when a hearing resumes Wednesday. (AP Photo/Themba Hadebe)
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    Matthew Hinton - AP
    Former New Orleans Mayor C. Ray Nagin leaves the Hale Boggs Federal Building and United States District Courthouse after pleading not guilty in federal court at an arraignment on public corruption charges in New Orleans, Wednesday, Feb. 20, 2013. Nagin did not speak with reporters. (AP Photo/Matthew Hinton)
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    Muhammed Muheisen - AP
    Khurram Mehtab, 25, checks a film strip before playing it for spectators at a cinema in Rawalpindi, Pakistan, Wednesday, Feb. 20, 2013. Pakistan stars in "Zero Dark Thirty," from early scenes at a detention site to the dramatic closing minutes as Navy SEALs assault the hideout of Osama bin Laden. But the Academy Award-nominated film about the hunt for the al-Qaida leader has sparked a controversy here about its portrayal of the country, and it will likely not be shown on the local big screen anytime soon. Partly, the film taps into national discomfort that bin Laden was found to be living for years near Pakistan's equivalent of West Point, and anger over the U.S. decision to enter its airspace and raid the compound without giving advance notice. (AP Photo/Muhammed Muheisen)
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    David Guttenfelder - AP
    A North Korean nurse comforts a baby at a nursery inside Pyongyang Maternity Hospital in Pyongyang, North Korea on Wednesday, Feb. 20, 2013. (AP Photo/David Guttenfelder)
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    Evan Vucci - AP
    Former Illinois Rep. Jesse Jackson Jr. arrives at the E. Barrett Prettyman Federal Courthouse in Washington, Wednesday, Feb. 20, 2013. Jackson and his wife were to appear in federal court to answer criminal charges that they engaged in an alleged scheme to spend $750,000 in campaign funds on personal items. (AP Photo/Evan Vucci)
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    Brendan Hoffman - Getty Images
    WASHINGTON, DC - FEBRUARY 20: Former Congressman Jesse Jackson, Jr. leaves the U.S. District Court for the District of Columbia on February 20, 2013 in Washington, DC. Both Jacksons plead guilty to federal charges of spending more than $750,000 in campaign cash on personal expenses. (Photo by Brendan Hoffman/Getty Images) *** BESTPIX ***
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    Brendan Hoffman - Getty Images
    WASHINGTON, DC - FEBRUARY 20: Reid Weingarten (C), the attorney for former Congressman Jesse Jackson, Jr. and his wife, former Chicago alderman Sandi Jackson, speaks to reporters outside the U.S. District Court for the District of Columbia on February 20, 2013 in Washington, DC. Both Jacksons are expected to plead guilty to federal charges of spending more than $750,000 in campaign cash on personal expenses. (Photo by Brendan Hoffman/Getty Images) *** BESTPIX ***
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    Charles Rex Arbogast - AP
    In this photo taken Thursday, Jan. 24, 2013, in Chicago, brain surgeon Ali Alaraj talks about the first time he viewed the brain using the CAVE2. “You can walk between the blood vessels,” said the University of Illinois College of Medicine neurosurgeon. “You can look at the arteries from below. You can look at the arteries from the side". CAVE2 is a system of 72 stereoscopic liquid crystal display panels that encircles the viewer 320 degrees and creates a 3D environment that can take you to the bridge of the Starship Enterprise, a flyover of the planet Mars, or through the blood vessels of the brain. (AP Photo/Charles Rex Arbogast)
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    Mark Wilson - Getty Images
    WASHINGTON, DC - FEBRUARY 20: U.S. Vice President Joseph Biden (R) and Attorney General Eric Holder (L) give the Medal of Valor to Angela Miller, widow of fallen Pennsylvania State Trooper Joshua D. Miller, during an event in Eisenhower Executive Office Building, February 20, 2013 in Washington, DC. Vice President Biden presented the award to public safety officers who have exhibited exceptional courage, regardless of personal safety, in the attempt to save or protect others from harm. (Photo by Mark Wilson/Getty Images) *** BESTPIX ***
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    Stuart Franklin - Getty Images
    MARANA, AZ - FEBRUARY 20: Marcus Fraser of Australia stands under an umbrella with his caddie as snow and rain fall during the first round of the World Golf Championships - Accenture Match Play at the Golf Club at Dove Mountain on February 20, 2013 in Marana, Arizona. (Photo by Stuart Franklin/Getty Images) *** BESTPIX ***
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    Franco Origlia - Getty Images
    ROME, ITALY - FEBRUARY 20: A man opens the main door of the Apostolic Palace of Castelgandolfo on February 20, 2013 in Rome, Italy. The Apostolic Palace and The Pontifical Villas of Castelgandolfo, 10 miles south Rome, are the summer residence of Popes and will host Pope Benedict XVI during the next conclave. (Photo by Franco Origlia/Getty Images) *** BESTPIX ***
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    Dan Kitwood - Getty Images
    LONDON, ENGLAND - FEBRUARY 20: Friends Kaitlyn Smith, 13, (left) and Yasmin Gomez, (right) 12, skate down a road in West Ham on February 20, 2013 in London, England. According to the latest census, London's white British population is now statistically a minority, forming just 45% of the capital's residents as a whole. The district of Newham is one of the most ethnically diverse in the country, and tops the list of areas with a decrease in the white British population. (Photo by Dan Kitwood/Getty Images) *** BESTPIX ***
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    Estbean Felix - AP
    A street vendor, right, looks at a disguised reveler during celebrations marking the 9th International Poetry Festival honoring Nicaraguan poet, priest and former Nicaragua's Culture Minister, Ernesto Cardenal, not in picture, in Granada, Nicaragua, Wednesday, Feb 20, 2013. The festival is attended by more than 300 poets from some 60 countries. (AP Photo/Esteban Felix)
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    Christopher Furlong - Getty Images
    OTTERBURN, UNITED KINGDOM - FEBRUARY 20: Royal Artillery Seargeant Kevin Bowen stands by his 105mm light artillery gun during an exercise on February 20, 2013 in Otterburn, United Kingdom. Artillery units from Brtain and France are taking part in an intensive training exercise for Regular and Reserve Army units preparing for Afghanistan at the Otterburn training area in Northumberland. French Fire Support Teams, who work alongside their infantry units calling in artillery support, are learning to work with the Royal Artillery for future combat. (Photo by Christopher Furlong/Getty Images) *** BESTPIX ***
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    Hannah Johnston - Getty Images
    *** BESTPIX *** TWIZEL, NEW ZEALAND - FEBRUARY 20: A coach rides down the rowing course during day two of the New Zealand Rowing Championships at Lake Ruataniwha on February 20, 2013 in Wellington, New Zealand. (Photo by Hannah Johnston/Getty Images)
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    Tim Whitby - Getty Images
    LONDON, ENGLAND - FEBRUARY 19: A model walks the runway at the Ziad Ghanem show during London Fashion Week Fall/Winter 2013/14 at Freemasons Hall on February 19, 2013 in London, England. (Photo by Tim Whitby/Getty Images)
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    Stuart Wilson - Getty Images
    LONDON, ENGLAND - FEBRUARY 19: A model has her make up applied backstage at the Roksanda Ilincic show during London Fashion Week Fall/Winter 2013/14 at The Savoy on February 19, 2013 in London, England. (Photo by Stuart Wilson/Getty Images)
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    Paul Gilham - Getty Images
    *** BESTPIX *** BARCELONA, SPAIN - FEBRUARY 19: Nico Rosberg of Germany and Mercedes GP in action during day one of F1 Testing at Circuit de Catalunya on February 19, 2013 in Barcelona, Spain. (Photo by Paul Gilham/Getty Images)
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    Ariana Cubillos - AP
    A mural depicting Venezuela's President Hugo Chavez and the words in Spanish "Healing" covers a wall along a downtown street in Caracas, Venezuela, Wednesday, Feb. 20, 2013. Chavez's sudden return to Venezuela after more than two months of cancer treatments in Cuba has fanned speculation that the president could be preparing to relinquish power and make way for a successor and a new election. Chavez remained silent and out of sight after his return was announced on his Twitter account Monday. The government said he was continuing unspecified medical treatments at Caracas' military hospital. (AP Photo/Ariana Cubillos)
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    Ariana Cubillos - AP
    The words in Spanish "Chavez is back" covers a red car's window above an image of Chavez on the car door in Caracas, Venezuela, Wednesday, Feb. 20, 2013. President Hugo Chavez's sudden return to Venezuela after more than two months of cancer treatments in Cuba has fanned speculation that the president could be preparing to relinquish power and make way for a successor and a new election. (AP Photo/Ariana Cubillos)
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    Zach Long - AP
    Oklahoma's Isaiah Cousins (11) passes around Texas Tech's Jordan Tolbert during their NCAA college basketball game in Lubbock, Texas, Wednesday, Feb. 20, 2013. (AP Photo/The Avalanche-Journal, Zach Long) ALL LOCAL TV OUT
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    Alex Brandon - AP
    Georgetown forward Aaron Bowen, front, and DePaul forward Peter Ryckbosch scramble for a loose ball during the second half of an NCAA college basketball game, Wednesday, Feb. 20, 2013, in Washington. Georgetown won 90-66. (AP Photo/Alex Brandon)
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    Alex Brandon - AP
    DePaul guard Brandon Young (20) passes as he is guarded by Georgetown forward Otto Porter Jr. (22), with forward Mikael Hopkins (3) and guard Markel Starks (5) nearby, during the first half of an NCAA college basketball game, Wednesday, Feb. 20, 2013, in Washington. Georgetown won 90-66. (AP Photo/Alex Brandon)
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    AJ MAST - AP
    New York Knicks guard Pablo Prigioni (9), of Argentina, goes for a rebound in front of Indiana Pacers guard D.J. Augustin (14) during the first half of an NBA basketball game in Indianapolis, Wednesday, Feb. 20, 2013. (AP Photo/AJ Mast)
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    Frank Gunn - AP
    Memphis Grizzlies guard Tony Allen (9) pokes Toronto Raptors forward Amir Johnson in the face during the first half of an NBA basketball game in Toronto on Wednesday, Feb. 20, 2013. (AP Photo/The Canadian Press, Frank Gunn)
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    Andres Kudacki - AP
    Spain's Prime Minister Mariano Rajoy speaks during a state of the nation debate at the Spanish Parliament in Madrid, Spain, Wednesday, Feb. 20, 2013. (AP Photo/Andres Kudacki)
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    Emilio Morenatti - AP
    A court worker is seen behind a banner reading 'No rates, Justice for all' during a protest outside a court, in Madrid, Spain, Wednesday, Feb. 20, 2013. Judges and prosecutors across Spain protest against a Justice Ministry reform they claim increases their workload, reduces some of their powers and restricts justice for those on lower income. (AP Photo/Emilio Morenatti)
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    Manish Swarup - AP
    An Indian railway porter along with others participates in a protest rally in New Delhi, India , Wednesday, Feb. 20, 2013. The porters demanded regularization of jobs in the railways along with medical benefits. (AP Photo/Manish Swarup)
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    Rajesh Kumar Singh - AP
    A Hindu holy man pauses as he returns after taking part in a community feast at the Ashram of Swami Ramanand Das at Sangam, the confluence of the Ganges and Yamuna River during the Maha Kumbh festival, in Allahabad, India, Wednesday, Feb. 20, 2013. Millions of Hindu pilgrims have been attending the Maha Kumbh festival, which is one of the world's largest religious gatherings that lasts 55 days and falls every 12 years. (AP Photo/ Rajesh Kumar Singh)
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