In this photograph taken on August 25, 2016, an Afghan shepherd watches over his sheep as they graze on the outskirts of Herat. (Photo by Aref Karimi/AFP Photo)

Young U.S. visitors pose for a photograph next to a vintage car in Havana March 16, 2016. (Photo by Ueslei Marcelino/Reuters)

Smalldog Imageworks Creative Retouching for Chick-fil-A Cows Calendar «Trail Grazers» by photographer Andy Mahr, 2011. (Photo by Andy Mahr)

Underwater with Photographer Caelum Mero. (Photo by Caelum Mero)

A photographer with a hidden camera took 2,500 photos before this elusive badger was ready for his close-up in September 2020. (Photo by Andy Swinden/BNPS)

Wingsuit flyer contestant Melissa Pemberton of the U.S. jumps off a mountain at Tianmen Mountain National Park in Zhangjiajie, Hunan province October 19, 2014. (Photo by Reuters/China Daily)

A visitor views a human body specimen during the “Human Body's Wonder Scientific Travelling Exhibition” at the Haikou Gymnasium April 30, 2006 in Haikou of Hainan Province, China. The exhibition displays 13 complete real human body specimens and about 300 pieces of small samples, such as organs, skin, etc with the purpose to promote science and help people know more about their bodies. (Photo by China Photos/Getty Images)

A coach wipes away tears and comforts a girl who was feeling tired during gymnastics lessons at the Shanghai Yangpu Youth Amateur Athletic School in Shanghai, China, May 4, 2016. (Photo by Aly Song/Reuters)