President Barack Obama speaks to the press in the Briefing Room of the White House April 27, 2011 in Washington, DC. US President Barack Obama released a long form version of his birth certificate after extended criticism by those who do not believe he was born in the United States. (Photo by Brendan Smialowski/Getty Images)

Lady Gaga arrives at Nevermind Nightclub on July 11, 2011 in Sydney, Australia. Lady Gaga fans gathered outside two Sydney nightclubs in hopes to catch a glimpse of the singer after she sent a cryptic tweet suggesting her she'd be stopping by the venues. (Photo by Marianna Massey/Getty Images)

Pakistani civil society activists release lanterns into the sky in Lahore on December 15, 2016, as they pay tribute to victims on the second anniversary of an attack on The Army Public School in the city of Peshawar. Taliban militants attacked on Pakistani Army Public School in Peshawar, killing 151 people mostly children on December 16, 2014. (Photo by Arif Ali/AFP Photo)

Council staff clean a section of the rarely seen Minton tiled floor of the of the grand St. George's Hall on January 4, 2012 in Liverpool, England. (Photo by Christopher Furlong/Getty Images)

Keira Knightly attends the UK Gala Premiere of “A Dangerous Method” at The Mayfair Hotel on January 31, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Immigrants from the West Indies at Victoria Station in London, 1956. (Photo by Hulton-Deutsch Collection/CORBIS/Corbis via Getty Images)

“Misty Morning”. Every morning, people expect sunny weather. Photo location: Bali, Indonesia. (Photo and caption by Henry Adam/National Geographic Photo Contest)