Egyptian bootblacks cleaning a European's shoes in Cairo. (Photo by Hulton Archive/Getty Images). Circa 1870

NASA's DHC-3 Otter plane flies in Operation IceBridge-Alaska surveys of mountain glaciers in Alaska in this image released on September 18, 2014. Over the past few decades, average global temperatures have been on the rise, and this warming is happening two to three times faster in the Arctic. (Photo by Chris Larsen/Reuters/NASA/University of Alaska-Fairbanks)

Revellers take part in the the 70th Annual Columbus Day Parade in New York, October 13, 2014. (Photo by Eduardo Munoz/Reuters)

Germany's Kira Walkenhorst (L) taps Germany's Laura Ludwig during the women's beach volleyball qualifying match between Germany and Canada at the Beach Volley Arena in Rio de Janeiro on August 9, 2016, for the Rio 2016 Olympic Games. (Photo by Leon Neal/AFP Photo)

Spectators pose for a photo upon entry for Derby Day at Flemington Racecourse on October 30, 2021 in Melbourne, Australia. Victoria's COVID-19 restrictions have eased to allow spectators to return to Flemington racecourse for the first time since 2019. (Photo by Asanka Ratnayake/Getty Images)

A fisherman sorts his net next to the 37-meter-long “KAWS:HOLIDAY Companion” inflatable sculpture in Tsing Yi, Hong Kong, China, 21 March 2019. KAWS:HOLIDAY, made by US artist and designer Brian Donnelly known professionally as Kaws, will be displayed in Hong Kong's Victoria Harbour from 22 to 31 March 2019. (Photo by Jerome Favre/EPA/EFE)

Tibetan monks in ghoulish costumes perform during a ceremony to chase away the “demon king” to bring peace and happiness for the Tibetan New Year at the Yonghegong Lama Temple in Beijing, Sunday, February 19, 2023. The annual event has returned after China lifted all bans on public gatherings from the outbreak of COVID-19. (Photo by Andy Wong/AP Photo)

A grey squirrel looks for some food from a girl in the Botanic Gardens in Glasnevin, Dublin, Ireland on April 3, 2023. (Photo by Damien Eagers/The Irish Times)