People ride a prototype of a driverless vehicle as it is moves through a pedestrian area in Greenwich, east London, February 11, 2015. Britain has begun testing driverless cars in four cities, launching the first official trials ahead of a series of planned rule reviews to accommodate the new technology. (Photo by Suzanne Plunkett/Reuters)

Workmen use a crane to winch a large stone head, created by British sculptor Emily Young, into Berkeley Square on February 2, 2012 in London, England. (Photo by Oli Scarff/Getty Images)

Egyptian bootblacks cleaning a European's shoes in Cairo. (Photo by Hulton Archive/Getty Images). Circa 1870

The aurora borealis, or the northern lights occur over Derwentwater, near Keswick, England, Thursday October 8, 2015. The northern lights are the result of collisions between gaseous particles in the Earth's atmosphere with charged particles released from the sun. (Photo by Owen Humphreys/PA Wire via AP Photo)

Born with a rare condition, the artist has chronicled her life in portraits – capturing everything from her tattooed prosthetics to the tentacled creature she stitched together on the shores of Naoshima. Here: Ophelia (2013). From a series of photos of imagined women exhibited at the 2013 Aichi Triennale. Here, Katayama invokes Hamlet’s tragic heroine, after the painting by British pre-Raphaelite John Everett Millais. (Photo by Mari Katayama/The Guardian)

Winner. “I took this vertical image in the Quarry Bay district of Hong Kong during the dusk ‘blue hour’, when there was a perfect balance between the ambient light in the sky and the artificial lights of the high-rise residential buildings”. (Photo by Jatinder Heer/The Guardian)

Hailey Hanestad thinks nothing about nuzzling up to the animal, called Wiley, and even dozes off with him on her bed. Wiley has been a treasured member of the family since being rescued by Hailey's dad, Rick, three years ago. Today he's thought to be just one of two coyotes in the US that have become domesticated after being born in the wild. Photo: Coyote Wiley sniffs Hailey, 8, at their home. (Photo by Barcroft Media)

Marine biologist Simon Pierce, who studies whale sharks, happened to be in the right place at the right time to capture amazing photo off Cancun, Mexico. (Photo by Simon Pierce/Mercury Press/Caters News)