Nearly 5,000 participants perform in a hula hoop competition to break the Guinness World Record for most people dancing with hula hoops, at Thammasat University, Pathumthani, Thailand Tuesday, Feb. 12, 2013. The Thai contestants celebrated in full swing after having set a new world record for the most people dancing with hula hoops simultaneously in one place. Guinness World Records adjudicator Seyda Subasi-Gemici said Tuesday that 4,483 people had swung hula hoops to dance music for seven minutes without interruption.(AP Photo/Sakchai Lalit)

On a large television screen in front of Pyongyang's railway station, a North Korean state television broadcaster announces the news that North Korea conducted a nuclear test on Tuesday, Feb. 12, 2013. North Korea conducted a nuclear test at an underground site in the remote northeast Tuesday, taking an important step toward its goal of building a bomb small enough to be fitted on a missile that could reach United States. The TV screen text reads: "Korean Central News Agency reports," and "The third underground nuclear test successfully conducted."(AP Photo/Kim Kwang Hyon)

A derailed train is seen on a station platform after a collision at a railway crossing in Takasago, Hyogo prefecture, Tuesday, Feb. 12, 2013. A commuter train collided with a truck at a railway crossing in southern Japan on Tuesday, injuring more than a dozen people. (AP Photo/Kyodo News)

Undated handout photo issued by The Sea Life London Aquarium of aquarists holding an underwater funeral for British Fish at the Sea Life London Aquarium. Aquarists at The Sea Life London Aquarium issued a stark warning today about the potential fate of British marine life by holding an underwater funeral. The sombre procession, lead by Aquarist Pete Williams, took place in the impressive shark reef display. Aquarists dressed as pallbearers and carried the coffin of British Fish to itÕs watery grave. Sea Life centres nationwide are campaigning for the Government to establish an effective network of Marine Conservation Zones in British waters to safeguard the future of seriously threatened species like the Undulate Ray and the Basking Shark. Tuesday February 12, 2013. (Mikael Buck/PA Wire)

A worker puts the final touches to giants figures depicting French President Francois Hollande, left, and German Chancellor Angela Merkel during preparations for the 129th Nice carnival parade, Tuesday, Feb. 12, 2013, in Nice, southeastern France. The 129th Nice Carnival runs from February 15th until March 6th and will celebrate the theme "King of the five continents" . (AP Photo/Lionel Cironneau)

A man wearing a carnival mask wades through high water with floating ice in a flooded St. Mark's Square, in Venice, Italy, early Tuesday, Feb. 12, 2013. The phenomenon of high water, which floods the Venice lagoon, occurs mainly between autumn and spring when tides are reinforced by seasonal winds. The recent snow falls and low temperatures formed ice blocks in the water. (AP Photo/Luigi Costantini)

A group of young girls study a brightly painted giant Easter Egg, which is one of 100 that will be hidden in cities throughout the country from today until the 1st April, as part of the Lindt Big Egg hunt in support of the Action for Children Charity, in Covent Garden in central London. Tuesday February 12, 2013. (John Stillwell/PA Wire)

Wallabies are given roses as a Valentine's treat at Twycross Zoo, Atherston, Warwickshire. Tuesday February 12, 2013. (Joe Giddens/PA Wire)

A model is prepared backstage before the Betsey Johnson Fall 2013 collection is shown during Fashion Week in New York, Monday, Feb. 11, 2013. (AP Photo/John Minchillo)

Christopher Kyle's wife, Taya, and his two children follow behind his casket during the recession of a memorial service for Kyle at Cowboys Stadium, Monday, Feb. 11, 2013, in Arlington, Texas. Thousands attended the public memorial service for Kyle, the former Navy SEAL sniper who was shot to death at a Texas shooting range. (AP Photo/Brandon Wade)

Activists of the Women's Movement FEMEN, protest against Pope Benedict XVI who announced his resignation yesterday, in Notre Dame Cathedral, Paris, Tuesday, Feb. 12, 2013. (AP Photo/Michel Euler)

The Dean of Ripon the Very Reverend Keith Jukes takes part in the annual Shrove Tuesday Pancake Races with local children outside Ripon Cathedral. Tuesday February 12, 2013. (Anna Gowthorpe/PA Wire)