Couples kiss during a kissing contest in Wuhan, Hubei province, November 23, 2014. Some 20 couples attended the contest and the winners have been awarded an iPhone 6, according to local media. (Photo by Reuters/Stringer)

The anthropomorphic robot named hitchBOT sits on the shoulder of Highway 102 to begin its 6000 kilometer cross country journey outside of Halifax, Nova Scotia, July 27, 2014. The hitch hiking robot is part of a social experiment to see if drivers will pick up and drop off the robot in one piece to an art gallery in Victoria, British Columbia. (Photo by Paul Darrow/Reuters)

Current England long jump champion and London 2012 hopeful J. J. Jegede attempts an exhibition jump over three Limited edition 2012 MINIs on September 28, 2011 in London, England. This world first is taking place to celebrate the launch of the MINI London 2012 Edition models, of which only 2,012 will be produced. (Photo by Julian Finney/Getty Images for BMW)

A man irrigating a rice paddy field using a traditional method. (Photo by Fox Photos/Getty Images). Japan, circa 1938

The world's biggest wild animal farmer, Carr Hartley of Rumuruti in Kenya, sells animals to zoos, circuses and film companies. (Photo by Maxim Ruston/BIPs/Getty Images). November 1956

A derelict farm house adorns the horizon as it sits in a field in the Lancashire Countryside on January 26, 2012 in Burscough, England. (Photo by Christopher Furlong/Getty Images)

Clutching a large paper bag and shading his eyes as he peers ahead, comic actor of the silent screen, Buster Keaton (1885–1966) arriving at Paris airport. (Photo by Keystone/Getty Images). 1st August 1947

English actress Liz Hurley, 55, poses topless in the snow in a photo taken by her son in United Kingdom at the end of January 2021. Brit stripped to white bikini bottoms from her own swimwear range and draped herself in a coat. (Photo by Instagram/The Sun)