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)

Aerial photo taken on March 4, 2017 shows cole flower fields in Luoping County, southwest China's Yunnan Province. (Photo by Xinhua/Barcroft Images)

ESA astronaut Tim Peake posted this stunning image on his social media channels, commenting: “Station passed through magnificent aurora Australis last night”. Tim is set to return to Earth on 18 June 2016, bringing his six-month Principia mission to the ISS to an end. During his stay he performed more than 30 scientific experiments for ESA and taking part in numerous others from ESA's international partners. ESA and the UK Space Agency have partnered to develop many exciting educational activities around the Principia mission, aimed at sparking the interest of young children in science and space. (Photo by Tim Peake/ESA/NASA)

Devotees wearing full body costumes to resemble Hindu monkey god – lord Hanuman take part in a procession in Amritsar on February 13, 2023. (Photo by Narinder Nanu/AFP Photo)

A woman leaps while arriving to greet a loved one during CLEAR Connects: A Day of Families, a mass reunion event, at MetLife Stadium in East Rutherford, New Jersey, U.S., May 6, 2021. (Photo by Brendan McDermid/Reuters)

Massangbe Doumbia, 25, a street vendor, carries goods on her head at the Adjame main market in Abidjan, Ivory Coast on March 7, 2024. (Photo by Issouf Sanogo/AFP Photo)

Gold Lame suit worn by Elvis Presley at the Direct from Graceland: Elvis exhibition which is held at the Arches London Bridge on October 19, 2023 in London, England. (Photo by Lia Toby/Getty Images)

A hot air balloon floats past an almost full rising moon on a warm fall evening near Encinitas, California October 5, 2014. (Photo by Mike Blake/Reuters)