An elephant bull charges a female hippopotamus as her calf scampers to safety, in Erindi Private Game Reserve in Windhoek, Namibia. (Photo by Rian van Schalkwyk/Barcroft Media)

Hundreds of hardy swimmers across Britain braved jumping into freezing cold waters for a annual Christmas Day dip on December 25, 2017. (Photo by Dave Nelson/The Sun)

A man takes a photograph of his friend as thick smoke rises from a fire, which broke out at oil wells set ablaze by Islamic State militants before they fled the oil-producing region of Qayyara, Iraq, January 28, 2017. (Photo by Muhammad Hamed/Reuters)

A SpaceX Falcon Heavy rocket lifts off from historic launch pad 39-A at the Kennedy Space Center in Cape Canaveral, Florida, February 6, 2018. The world' s most powerful rocket, SpaceX' s Falcon Heavy, blasted off Tuesday on its highly anticipated maiden test flight, carrying CEO Elon Musk' s cherry red Tesla roadster to an orbit near Mars. Screams and cheers erupted at Cape Canaveral, Florida as the massive rocket fired its 27 engines and rumbled into the blue sky over the same NASA launchpad that served as a base for the US missions to Moon four decades ago. (Photo by Thom Baur/Reuters)

A demonstrator shows her arm with the name “Marielle” written on it, as she performs during a protest against the murder of councilwoman Marielle Franco in Rio de Janeiro, Brazil, Tuesday, March 20, 2018. Franco's murder came just a month after the government put the military in charge of security in Rio, which is experiencing a sharp spike in violence less than two years after hosting the 2016 Summer Olympics. (Photo by Leo Correa/AP Photo)

Members of the Delirio dance company perform during the “Hechizo” (Spell) virtual show, inspired by the legend of the merry widow on Hallo​ween night, in Cali, Colombia, 31 October 2020. (Photo by Ernesto Guzman Jr./EPA/EFE)

A woman shouts slogans as she marches to Congress to commemorate International Women's Day in Buenos Aires, Argentina, Monday, March 9, 2020. (Photo by Natacha Pisarenko/AP Photo)

Indian Christians take part in Christmas prayers at the Infant Jesus church in Bangalore, India, 25 December 2020. Most Christians celebrate Christmas on 25 December to commemorate the birth of Jesus, the central figure of Christianity. (Photo by Jagadeesh N.V./EPA/EFE)