People make pictures in a Soviet-era vintage subway car, with a Soviet railways emblem on the side of it, parked in the Partizanskaya subway station in Moscow, Russia, Friday, May 15, 2015. Vintage Soviet-era metro cars were exhibited at the Partizanskaya subway station as part of festivities marking the 80th anniversary of the Moscow subway on Friday. (Photo by Pavel Golovkin/AP Photo)

A young girls holds a ballot during the Greek referendum in Athens on July 5, 2015. Greek voters headed to the polls today to vote in a historic, tightly fought referendum on whether to accept worsening austerity in exchange for more bailout funds, in a gamble that could see it crash out of the euro. (Photo by Aris Messinis/AFP Photo)

A polar bear fast asleep at London Zoo. (Photo by Fox Photos/Getty Images). 1961

Bulgarian Roma women from the close-knit Kalaidjii clan attend a so-called “bride fair” in a suburb of the city of Plovdiv April 13, 2015. Each year Roma families from the close-knit Kalaidjii clan gather during what they call a “bride fair”, an event offering parents a chance to meet and to arrange marriages for their children. (Photo by Stoyan Nenov/Reuters)

Pooh, a one-year-old cat, who lost his hind legs in an accident and has been given bionic paws, walks in a vet clinic in Sofia on January 31, 2017. Pooh, who is thought to have lost his legs in a car or train accident last April, is back on the prowl thanks to Bulgarian veterinary surgeon Vladislav Zlatinov. He is the first vet in Europe to successfully apply the pioneering method of Irish neuro-orthopaedic surgeon Noel Fitzpatrick, who shot to fame in 2009 when making Oscar the first bionic cat by fitting him with new hind legs in Britain. (Photo by Nikolay Doychinov/AFP Photo)

The Malabar Giant squirrel – double the size of their grey relatives and measuring up to 36 inches (91.5 cm) from head to tail – lives deep in the forests of India. The athletic animals can leap an incredible 20 feet (6 m) between trees. Photographer Kaushik Vijayan, 39, snapped the animals in their native habit to produce these stunning images. Kaushik, from Kerala State, India, said: “Up until that point I had never heard about a squirrel like that or seen one. The sight was an absolute feast for my eyes. The squirrels fascinated me and I got excited to capture this beauty on my camera”. (Photo by Kaushik Vijayan/South West News Service)

A young man dressed as “La Llorona”, participates in a parade called “La Calabiuza” on the eve of the Day of the Dead in Tonacatepeque, El Salvador, November 1, 2019. (Photo by Jose Cabezas/Reuters)

“A Balinese man shows off his pride and joy, a fighting cock, while on a cigarette break after a morning’s work in nearby fields”. (Photo by Coltrane Koh/The Guardian)