A ballet dancer poses in a giant plastic bubble as she entertains Christmas shoppers in Melbourne on December 13, 2020. (Photo by William West/AFP Photo)

Bella Hadid, leads other models, as they wear creations as part of the Fendi Fall/Winter 2022-2023 fashion collection, as guests record the show on their cell phones during the Fashion Week in Milan, Italy, Wednesday, February 23, 2022. (Photo by Antonio Calanni/AP Photo)

English singer-songwriter Dua Lipa performs at Spark Arena on November 02, 2022 in Auckland, New Zealand. (Photo by Phil Walter/Getty Images)

Actor Howard Coggins performs during the Living Spits Beauty and the Beast comedy at the Bristol Old Vic on December 9, 2020 in Bristol, England. Living Spit stars Howard Coggins and Stu McLoughlin will perform Beauty and the Beast in a series of live broadcasts and on stage shows at the Old Vic from December 18. (Photo by Matthew Horwood/Getty Images)

Each year Nikon Small World recognizes the excellence of photography taken under the microscope. The contest showcases the beauty and complexity of life. Anyone interested in microscopy and photography can enter the contest and in its 42nd year, Nikon Small World received 2,000 entries from 70 countries. Here: 11th Place; Scales of a butterfly wing underside (Vanessa atalanta). (Photo by Francis Sneyers/Nikon's Small World 2016)

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

A window cleaner passes a lighter to his colleague while rappelling from a new building in Tianjin March 23, 2007. (Photo by Reuters/Stringer)

A period of relative stability has put the Iranian capital No1 on the list of world cities that have achieved biggest improvements in liveability over the past five years, as calculated by the Economist Intelligence Unit. The “most improved” top 10 contains some unexpected names. So, eg, the fourth place: Abidjan, Ivory Coast. Latest ranking: 128; Ranking five years ago: 131; Five-year index movement: 3.8%. Here: A supporter of Ivory Coast president Alassane Ouattara campaigns in a market in the city’s Koumassi quarter. (Photo by Sia Kambou/AFP Photo)