A hot air balloon depicting a dog that participates in the International Hot Air Balloon Festival, flies over Leon, Guanajuato state, Mexico, on November 14, 2020, amid the COVID-19 coronavirus pandemic. The festival, in which 100 air balloons participate, was held without spectators to avoid crowds and prevent contagion. (Photo by Ulises Ruiz/AFP Photo)

Alejandro Zelayaran, 43, dressed as Santa Claus, wears a protective face shield as he poses for a photograph on a street in Mexico City, Mexico, December 3, 2020. “Faith and hope must move the heart of the humanity”, said Zelayaran, who will don a face shield when he distributes dolls and other gifts at an orphanage in Mexico City. “I want to see families taking care of each other and knowing that even from afar, love and hope always survive”. (Photo by Edgard Garrido/Reuters)

“These Rajasthani sisters were sitting on the staircase inside their house relaxing and enjoy a cup of masala chai”. (Photo by Firdaus Hadzri/National Geographic Travel Photographer of the Year Contest)

International photographic competition, which runs in association with the Royal Botanic Gardens in Kew, London, awards special prize for the best close-up images. Here: Winner – Mayflies by Petar Sabol, Goričan, Croatia. (Photo by Sabol Petar/International Garden Photographer of the Year)

Dead leaf or almost by Guilhem Duvot. Taken in Nován Stráž, Slovakia. Describe what is pictured? A dead leaf grasshopper. How does this image fit with the theme of the competition? The perfect camouflage – nature is amazing. I saw the grasshopper only because it jumped. (Photo by Guilhem Duvot/Royal Society of Biology)

King George V (1865–1936), king of Great Britain since 1910, with his queen-consort Queen Mary (1867–1953), at Collier Hospital on a visit to Dublin. (Photo by Topical Press Agency/Getty Images)

German field telegraph operators at work in Warsaw. (Photo by Hulton Archive/Getty Images). 1st October 1914

Russian soldiers write home while serving on the Eastern Front during World War I, circa 1915. (Photo by Hulton Archive/Getty Images)