New York City policemen tangled with demonstrators at a subway station on the opening day of the New York World's Fair, April 22, 1964. Youths attempted to stall the train, which was headed from the city to the fairgrounds, as a form of protest on behalf of civil rights for blacks. (Photo by Charles Gorry/AP Photo)

New Zealand Paralympic swimmer Cameron Leslie poses for portrait at the Millennium Pool on March 26, 2012 in Auckland, New Zealand. (Photo by Hannah Johnston/Getty Images)

Nurse's Home, North Brother Island, New York. Photographer Christopher Payne specializes in the documentation of America’s vanishing architecture and industrial landscape. His new book, North Brother Island: The Last Unknown Place in New York City, explores an uninhabited island of ruins in the East River of New York City. (Photo by Christopher Payne)

The Facebook website is displayed on a laptop computer on May 9, 2011 in San Anselmo, California. An investigation by The Pew Research Center found that Facebook has become a player in the news industry as the popular social media site is driving an increasing amount of traffic to news web sites. (Photo Illustration by Justin Sullivan/Getty Images)

Settled snow is seen covering houses and Cecil Peak on New Zealand's lower South Island on November 4, 2011 in Queenstown, New Zealand. The unseasonal weather is not expected to clear until tomorrow, with snow continuing to fall. (Photo by Teaukura Moetaua/Getty Images)

A prototype of a new nano spaceship is displayed during a press conference held by Israel's Space IL organisation on December 8, 2011 in Ehud, Israel. Israeli President Shimon Peres participated in the event unveiling Space IL's latest prototype nano spaceship with the aim of launching a Israeli robotic spacecraft that will land on the moon and raise funds for scientific education in Israel. (Photo by Ilia Yefimovich/Getty Images)

Brazilians celebrate at the annual New Year's Eve beach party on December 31, 2011 for the Copacabana Reveillon in Rio De Janeiro, Brazil. (Photo by Konrad Fiedler/Getty Images)

Camels walk down a street at the end of the Three Kings Day Parade in East Harlem on January 6, 2012 in New York City. (Photo by Mario Tama/Getty Images)