A protester holds up a symbolic chain as the trial of ousted Egyptian president Hosni Mubarak continues on February 16, 2012 in Cairo, Egypt. (Photo by Carsten Koall/Getty Images)

Brazilian revelers pose during Carnival celebrations along Ipanema beach on February 18, 2012 in Rio de Janiero, Brazil. (Photo by Mario Tama/Getty Images)

Kim Dotcom is released on bail at North Shore District Court on February 22, 2012 in Auckland, New Zealand. The MegaUpload.com founder and four associates were arrested last month, accused of “Internet piracy” by U.S. authorities. (Photo by Sandra Mu/Getty Images)

Enthusiasts gather for the Model Rail Scotland exhibition on February 24, 2012 in Glasgow, Scotland. (Photo by Jeff J. Mitchell/Getty Images)

Giant Olympic rings are towed on The River Thames past The Tower of London on February 28, 2012 in London, England. (Photo by Peter Macdiarmid/Getty Images)

A cameraman films “Diana And Callisto” (circa 1556-59) oil painting by Venetian artist Titian as it goes on display for the first time at the National Gallery on March 1, 2012 in London, England.(Photo by Dan Kitwood/Getty Images)

Fireworks light up the skyline over Sydney Harbour during the midnight fireworks session as Sydney Celebrates New Year's Eve with the theme of “Time To Dream” on on January 1, 2012 in Sydney, Australia. (Photo by Ryan Pierse/Getty Images)

Anglers cast lines through holes into a frozen river during an ice fishing competition at the Hwacheon Sancheoneo Ice Festival on January 7, 2012 in Hwacheon-gun, South Korea. (Photo by Chung Sung-Jun/Getty Images)