A reveller, covered in mud, chats with friends during the Glastonbury Festival at Worthy Farm in Somerset, Britain, June 26, 2015. The outdoor festival runs from 24 to 29 June. (Photo by Dylan Martinez/Reuters)

A model presents a creation from The Blonds Autumn/Winter 2019 collection during New York Fashion Week in New York, U.S. February 12, 2019. (Photo by Andrew Kelly/Reuters)

South African model Candice Swanepoel walks the red carpet ahead of the “Marriage Story” screening during during the 76th Venice Film Festival at Sala Grande on August 29, 2019 in Venice, Italy. (Photo by Jacopo Raule/Getty Images)

Men soar through the air on a wooden sledge during a traditional Bavarian horn sledge race, known as “Schnablerrennen”, in Gaissach near Bad Toelz, Germany, January 22, 2017. (Photo by Michael Dalder/Reuters)

Visitors look at an installation by Olaf Metzel at the exhibition “ARTandPRESS” at Martin Gropius Bau on March 26, 2012 in Berlin, Germany. The exhibition shows works by artists who have interpreted the medium of newspapers and is open from March 23 to June 24. (Photo by Sean Gallup/Getty Images)

Horse racing is part of Naadam, a festival organized every July in Mongolia to celebrate the People’s Revolution. Using children as jockeys in such races has a centuries-long tradition. Boys and girls as young as 5 (although the law imposes a minimum age limit of 7) ride in races that can be dangerous, with hundreds of horses running across the steppe at distances of 12 to 28 kilometres at great speeds. (Photo by Tomasz Gudzowaty)

U.S. Army soldiers carry an injured soldier who was shot in the leg, through a poppy field on April 24, 2011 in the Arghandab River Valley, Kandahar Province, Afghanistan. The injured was evacuated to a waiting Blackhawk UH-60A helicopter by Task Force Thunder Brigade, Charlie company 1st of the 52nd Aviation regiment from Fairbanks, Alaska. It is feared that as weather improves with the approaching summer that the casualty toll will rise. (Photo by Paula Bronstein/Getty Images)