A ring-tailed lemur sunbakes at Melbourne Zoo in Melbourne, Victoria, Australia on December 21 2016. (Photo by Julian Smith/EPA)

Palestinians walk at the site of Israeli strikes on houses, in Jabalia refugee camp in the northern Gaza Strip on November 21, 2023. (Photo by Abed Sabah/Reuters)

A man and his son ride a horse at Tahrir Square in Sanaa, Yemen on January 21, 2021. (Photo by Khaled Abdullah/Reuters)

Underground dancers dressed in Spiderman costumes perform in the subway of Saint Petersburg late on May 21, 2021. (Photo by Olga Maltseva/AFP Photo)

Some bats in the forested area of Guapiles, Costa Rica, 21 April 2020. (Photo by Jeffrey Arguedas/EPA/EFE)

Christie Brinkley is seen walking in midtown on August 21, 2019 in New York City. (Photo by Raymond Hall/GC Images)

A Spanish recortador jumps over a bull during a show in Cali December 21, 2014. (Photo by Jaime Saldarriaga/Reuters)

A “Free Syrian Army” fighter in the Bustan Pasha neighborhood of Aleppo, Syria, August 21, 2013. (Photo by James Lawler Duggan)