Thousands of Egyptian protesters shout slogans supporting Islamist President Mohammed Morsi during a rally outside Cairo University in Cairo, Egypt, Friday, Feb. 15, 2013. Around 5,000 mostly hardline Islamists are rallying in Egypt against a recent wave of protests that has killed around 70 people. (AP Photo/Amr Nabil)

Campaigners for Fuel Poverty Action gather outside the Scottish Gas headquarters in Edinburgh to protest against rising profits while one in four people are living in fuel poverty. Friday February 15, 2013.(David Cheskin/PA Wire)

Late polar bear Knut is on display at the Natural History Museum in Berlin, Friday, Feb. 15, 2013. Adorable in life, still attracting admirers in death: Knut the polar bear's hide has been mounted on a polyurethane body and is going on display in a Berlin museum. The Natural History Museum on Friday unveiled the statue prepared by taxidermists featuring the famous Berlin Zoo bear's fur and claws, with the synthetic body and glass eyes. Knut was hand-raised after his mother rejected him. He rose to stardom in 2007 as a cuddly cub, appearing on magazine covers, in a film and on mountains of merchandise. He died in 2011 after suffering from encephalitis. (AP Photo/Markus Schreiber)

In this photo provided by Chelyabinsk.ru municipal workers repair damaged electric power circuit outside a zinc factory building with about 600 square meters (6000 square feet) of a roof collapsed after a meteorite exploded over in Chelyabinsk region on Friday, Feb. 15, 2013 A meteor streaked across the sky of Russia's Ural Mountains on Friday morning, causing sharp explosions and reportedly injuring around 100 people, including many hurt by broken glass. (AP Photo/ Oleg Kargapolov, Chelyabinsk.ru)

Great Britain's Mo Farah double Gold Medal winner with school children from Lords Wood Lower Boys and Girls school during a Photocall at the Crowne Plaza Hotel, Birmingham. Friday February 15, 2013. (Nick Potts/PA Wire)

A visitor views sand sculptures on display at Frankston Foreshore, 45 kilometers (about 28 miles) from Melbourne, Australia Friday, Feb 15. 2013. For 4 months from Boxing Day, Frankston Waterfront has been be transformed as 3,500 tonnes of sand is carved into spectacular sculptures. (AP Photo/Andrew Brownbill)

Houses burn during a fire at the San Roque hill in Valparaiso, some 75 miles (120 km) northeast of Santiago, Chile, Thursday, Feb. 14, 2013. A forest fire that engulfed a hill in the Chilean port city of Valparaiso destroyed at least 70 homes and forced the evacuation of more than 500 families, officials said on Thursday. (AP Photo/Genaro Morales)

A worker puts the finale touch to a train made with lemons and oranges during the 80th Lemon festival in Menton, southern France, Friday, Feb. 15, 2013. The theme for the festival, which involves over 300 professionals working on the project and 145 tons of citrus fruits is "Around the World in 80 Days." (AP Photo/Lionel Cironneau)

Passengers spell out the word "HELP" aboard the disabled Carnival Lines cruise ship Triumph as it is towed to harbor off Mobile Bay, Ala., Thursday, Feb. 14, 2013. The ship with more than 4,200 passengers and crew members has been idled for nearly a week in the Gulf of Mexico following an engine room fire. (AP Photo/Gerald Herbert)

President Barack Obama uses a spy glass to play with a young girl during a visit to College Heights Early Childhood Learning Center in Decatur, Ga. on Thursday, Feb. 14, 2013. The president visited the school to highlight their pre-kindergarten program. He is proposing a nationwide initiative for children in pre-kindergarten. (AP Photo/Atlanta Journal-Constitution, Johnny Crawford, Pool)

Infant gorilla Bomassa eats leaves beside his mother as they roam the Forest Glade exhibit at The North Carolina Zoo, Thursday, Feb. 14, 2013, in Asheboro, N.C. Later this year, the zoo is expecting its third successful gorilla birth in less than a year. (AP Photo/News & Record, Jerry Wolford)

Thai policemen arrange packages of methamphetamine on a table before a press conference in Bangkok, Thailand, Friday, Feb. 15, 2013. Thai police seized nearly 2 million methamphetamine pills from smugglers near the country's northern border Thursday in one of this year's largest drug busts. (AP Photo/Sakchai Lalit)