Mads Nissen, a Danish staff photographer for the Danish daily newspaper Politiken and represented by Panos Pictures, won the World Press Photo of the Year 2014 contest with this image of Jon and Alex, a gay couple, during an intimate moment in St. Petersburg, Russia, in this picture released by the World Press Photo on February 12, 2015. The prize-winning entries of the World Press Photo Contest 2015, the world's largest annual press photography contest, were announced February 12, 2015. Jury chair Michele McNally, said: “It is an historic time for the image' the winning image needs to be aesthetic, to have impact, and to have the potential to become iconic. This photo is aesthetically powerful, and it has humanity”. (Photo by Mad Nissen/Reuters/Politiken/Panos Pictures/Scanpix/World Press Photo)

Raphaela Rosella, an Australian photographer of Oculi agency, won the First Prize in the Portraits Category, Singles, of the 2015 World Press Photo contest with this portrait of Laurinda waiting in her purple dress for the bus that will take her to Sunday school in Moree, New South Wales, Australia, in this picture released by the World Press Photo organisation on February 12, 2015. (Photo by Raphaela Rosella/Reuters/Oculi/World Press Photo)

Asa Sjostrom, a Swedish photographer working for Moment Agency, won the Second Prize in the Daily Life Category, Singles, of the 2015 World Press Photo contest with this image of twin brothers Igor and Arthur handing out chocolates to their classmates to celebrate their ninth birthday in Baroncea, Moldova, in this picture taken March 24, 2014 and released by the World Press Photo on February 12, 2015. (Photo by Asa Sjostrom/Reuters/Moment/Institute for Socionomen/UNICEF/World Press Photo)

Sarker Protick, a Bangladeshi photographer, won the Second Prize in the Daily Life Category, Stories, of the 2015 World Press Photo contest with his series of pictures which includes this image of John wearing his grandson's bowler hat, in this picture taken May 19, 2014 and released by the World Press Photo on February 12, 2015. (Photo by Sarker Protick/Reuters/World Press Photo)

Sergei Ilnitsky, a Russian photographer of the European Pressphoto Agency, won the First Prize in the General News Category, Singles, of the 2015 World Press Photo contest with this image of damaged goods lying in a kitchen in downtown Donetsk, in this picture taken August 26, 2014 and released by the World Press Photo on February 12, 2015. (Photo by Sergei Ilnitsky/EPA/World Press Photo)

Ronghui Chen, Chinese photographer of City Express, won the Second Prize in the Contemporary Issues Category, Singles, of the 2015 World Press Photo contest with this picture of Wei, a 19-year-old Chinese worker, wearing a face mask and a Santa hat, standing next to Christmas decorations being dried in a factory as red powder used for colouring hovers in the air, in Yiwu, China, in this picture taken December 6, 2014, and released by the World Press Photo on February 12, 2015. (Photo by Ronghui Chen/Reuters/City Express/World Press Photo)

Al Bello, a U.S. photographer of Getty Images, won the Second Prize in the Sports Category, Singles, of the 2015 World Press Photo contest with this picture of Odell Beckham (#13) of the New York Giants making a one-handed touchdown catch in the second quarter against the Dallas Cowboys at MetLife Stadium in East Rutherford, New Jersey, in this picture taken November 23, 2014 and released by the World Press Photo on February 12, 2015. (Photo by Al Bello/Gety Images/World Press Photo)

Paolo Verzone, an Italian photographer of Agence VU, won the Third Prize in the Portraits Category, Stories, of the 2015 World Press Photo contest with his series of portraits, which includes this one of a cadet at the Koninklijke Militaire Academie (Royal Military Academy) in Breda, the Netherlands in this picture taken December 18, 2013 and released by the World Press Photo on February 12, 2015. (Photo by Paolo Verzone/Reuters/Agence Vu/World Press Photo)

Anand Varma, a U.S. photographer working for the National Geographic, won the First Prize in the Nature Category, Stories, of the 2015 World Press Photo contest with his series of pictures, which includes this one of spores of a fungus landing on an ant, penetrating its exoskeleton and entering its brain, compelling the host to leave its normal habitat on the forest floor and scale a nearby tree, in this picture taken January 22, 2014 and released by the World Press Photo on February 12, 2015. (Photo by Anand Varma/Reuters/National Geographic/World Press Photo)

Ami Vitale, a U.S. photographer working for the National Geographic, won the Second Prize in the Nature Category, Singles, of the 2015 World Press Photo contest with this picture of a group of young Samburu warriors encountering a rhino for the first time in their lives in Lewa Downs, Kenya, in this picture taken November 24, 2014 and released by the World Press Photo on February 12, 2015. (Photo by Ami Vitale/Reuters/National Geographic/World Press Photo)

Darcy Padilla, a U.S. photographer of Agence VU, won the First Prize in the Long-Term Projects of the 2015 World Press Photo contest with her work “Family Love 1993-2014 – The Julie Project” series, which includes this image of Julie in San Francisco, taken January 28, 1993 and released by the World Press Photo on February 12, 2015. (Photo by Darcy Padilla/Reuters/Agence VU/World Press Photo)

Massimo Sestini, an Italian photographer, won the Second Prize in the General News Category, Singles, of the 2015 World Press Photo contest with this image of shipwrecked people being rescued aboard a boat 32 km (20 miles) north of Libya by a frigate of the Italian navy in this picture taken June 7, 2014, and released by the World Press Photo on February 12, 2015. (Photo by Massimo Sestini/Reuters/World Press Photo)

Jerome Sessini, a French photographer of Magnum Photos on assignment for the De Standaard, won the Second Prize in the Spot News Category, Stories, of the 2015 World Press Photo contest with his series of pictures which includes this one of a protester calling for medical aid for a comrade shot dead in Kiev, taken February 20, 2014 and released by the World Press Photo on February 12, 2015. (Photo by Jerome Sessini/Reuters/Magnum Photos/World Press Photo)

Bao Tailiang, a Chinese photographer of Chengdu Economic Daily, won the First Prize in the Sports Category, Singles, of the 2015 World Press Photo contest with this picture of Argentina's player Lionel Messi coming to face with the World Cup trophy during the final celebrations at Maracana Stadium in Rio de Janeiro, in this picture taken July 13, 2014, and released by the World Press Photo on February 12, 2015. (Photo by Bao Tailiang/Reuters/Chengdu Economic Daily/World Press Photo)

Glenna Gordon, a U.S. photographer, won the Second Prize in the General News Category, Stories, of the 2015 World Press Photo contest with his series of pictures which includes this one of school uniforms belonging to three of the missing girls abducted by Islamic militants Boko Haram in Abuja, in this picture released by the World Press Photo on February 12, 2015. (Photo by Glenna Gordon/Reuters/World Press Photo)

Bulent Kilic, a Turkish photographer for Agence France-Presse, won the First Prize in the Spot News Category, Singles, of the 2015 World Press Photo contest with this picture of a young girl after she was wounded during clashes between riot police and protesters following the funeral of Berkin Elvan, the 15-year-old boy who died from injuries suffered during last year's anti-government protests in Istanbul, in this picture taken March 12, 2014 and released by the World Press Photo on February 12, 2015. (Photo by Bulent Kilic/AFP Photo/World Press Photo)

Yongzhi Chu, a Chinese photographer, won the First Prize in the Nature Category, Singles, of the 2015 World Press Photo contest with this picture of a a monkey being trained for circus cowering as its trainer approaches in Suzhou, in this picture taken November 29, 2014 and released by the World Press Photo on February 12, 2015. (Photo by Yongzhi Chu/Reuters/World Press Photo)

Pete Muller, a U.S. photographer of Prime on assignment for National Geographic/The Washington Post, won the First Prize in the General News Category, Stories, of the 2015 World Press Photo contest with his series of pictures which includes this one of medical staff at the Hastings Ebola Treatment Center escorting a man in the throes of Ebola-induced delirium back into the isolation ward from which he escaped, in Freetown, in this picture taken November 23, 2014 and released by the World Press Photo on February 12, 2015. (Photo by Pete Muller/Reuters/Prime/National Geographic/The Washington Post/World Press Photo)

Tomas van Houtryve, a Belgian photographer of VII on assignment for Harper's Magazine, won the Third Prize in the Contemporary Issues Category, Stories, of the 2015 World Press Photo contest with his series of pictures taken with a camera mounted on a drone, which includes this one of students in a schoolyard in El Dorado County, California, in this picture taken December 16, 2013 and released by the World Press Photo on February 12, 2015. (Photo by Tomas van Houtryve/Reuters/VII/World Press Photo)

A file photo taken on April 15, 2014 shows the mother (R) of Abdolah Hosseinzadeh, who was murdered in 2007, slapping Balal who killed her son during the execution ceremony in the northern city of Noor just before she removed the noose around his neck with the help of her husband, sparing the life of her son's convicted murderer. The dramatic events followed a rare public campaign to save the life of Balal, who at 19 killed another young man, Abdollah Hosseinzadeh, in a street fight with a knife back in 2007. Arash Khamooshi was awarded with the World Press Spot News Stories Third Prize for this photo on February 12, 2015. (Photo by Arash Khamooshi/AFP Photo/World Press Photo)

A file photo taken on October 23, 2014 shows militants of Islamic State (IS) standing just before explosion of an air strike on Tilsehir hill near Turkish border, at Yumurtalik village, in Sanliurfa province. Bulent Kilic was awarded with the World Press Spot News Single third prize for this photo on February 12, 2015. (Photo by Bulent Kilic/AFP Photo/World Press Photo)