A child coughs as migrants and refugees run away after Macedonian police fired tear gas at hundreds of Iraqi and Syrian migrants who tried to break through the Greek border fence in Idomeni, on February 29, 2016. Greek police said more than 6,000 people were massed at the border, in a buildup triggered by Austria and Balkan states capping the numbers of migrants entering their territory. (Photo by Louisa Gouliamaki/AFP Photo)

North Kenya, Liboi. A young Somali refugee crosses a field filled with marabous storks in July 1992. (Photo by Jean-Claude Coutausse)

Police officers detain a woman who laid flowers for Alexei Navalny at the Memorial to Victims of Political Repression in St. Petersburg, Russia on Friday, February 16, 2024. Russian authorities say that Alexei Navalny, the fiercest foe of Russian President Vladimir Putin who crusaded against official corruption and staged massive anti-Kremlin protests, died in prison. He was 47. (Photo by AP Photo)

Mane flowing, a young competitor clears a jump at the hobby horse racing, eventing and dressage event at Parklands Equestrian Centre near Sheffield, UK on December 30, 2024. (Photo by James Glossop/Times Media Ltd)

Polish photographer David Kaszlikowski took a series of stunning photographs of a glacier in the Karakoram region of Pakistan while on a film expedition. At the Baltoro and Godwin-Austen glaciers near K2, the second highest mountain in the world, he sent his drone on flights to scout the surrounding landscape. Here: at the heart of Karakoram, a glacier formation found at Concordia at the very beginning of one of the longest glaciers on the planet, Baltoro. (Photo by David Kaszlikowski/Rex Features)

Farmer Zhang Xianping rides his pig "Big Precious" during an interview with the media, in Zhangjiakou, Hebei province, China, November 2, 2015. Zhang, a pig breeder, instead of killing it, decided to keep the two-year-old "Big Precious" as pet when its weight reached 600 kg, according to local media. (Photo by Reuters/China Daily)

A portrait of Eric Abidal of Lyon prior to the UEFA Champions League Group D match between Olympique Lyonnais and Manchester United at the Municipal de Garland Stadium on September 15, 2004 in Lyon, France.

A young Matachin dancer sits on a the side during the annual pilgrimage in honor of Mexico's patron saint the Virgin of Guadalupe in Ciudad Juarez, Mexico, December 12, 2016. (Photo by Jose Luis Gonzalez/Reuters)