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)

A women wearing a mask to protect from extreme smog visits the Tiananmen Gate in Beijing December 8, 2015 as China's capital issues its first ever "red alert" for pollution. (Photo by Damir Sagolj/Reuters)

A woman looks on December 10, 2020 at a metal monolith that has popped up on a riverbank of the Vistula in the Polish capital Warsaw, the latest in a string of similar objects that have recently appeared in Europe and the US. Similar-looking objects were found in the United States, Romania and Britain. (Photo by Wojtek Radwanski/AFP Photo)

People train parrots during a parrot-training show held by Kuwaiti bird lovers in Jahra Governorate, Kuwait, December 7, 2020. (Photo by Xinhua News Agency/Rex Features/Shutterstock)

“By 1969, the fashion choices of tens of millions of young American men and women were as variegated and ever-evolving as the world around them. Cultural transformation was an irresistible force during the Sixties, and across America and around the globe civil rights, women’s and gay liberation, the sexual revolution and, of course, the explosive soundtrack of R&B, soul and rock and roll informed everything from politics to fashion”. – LIFE. Photo: Corona del Mar High School students Kim Robertson, Pat Auvenshine and Pam Pepin wear “hippie” fashions, 1969. (Photo by Arthur Schatz/Time & Life Pictures)

Kenyan photographer and art director Barbara Minishi (L) takes pictures of her room mate and fashion stylist Wambui Thimba (R) wearing a creation by a Kenyan fashion designer on the rooftop of their apartment in Nairobi, Kenya, on June 1, 2020. After their scheduled works was cancelled due to the spread of the COVID-19 coronavirus, Minishi and Thimba have started their own project called “the Kenya Fashion & Style Diary in 21 days” to showcase a Kenyan fashion brand everyday for 3 weeks on social networking services since May 22, 2020 by only shooting at their apartment. (Photo by Yasuyoshi Chiba/AFP Photo)

Samantha Bailey takes a selfie with a staff member dressed like a raptor at the Jurassic Quest drive-thru Experience outside The Rose Bowl Stadium during the outbreak of the coronavirus disease (COVID-19), in Pasadena, California, U.S., January 15, 2021. (Photo by Mario Anzuoni/Reuters)

Isabella Ferrari and Ben Ra pose for a photograph taken by Jacob deBlecourt at the City of Boston's Pride Kickoff event, celebrating the start of National LGBTQ+ Pride Month, in Boston, Massachusetts, U.S., June 1, 2022. (Photo by Brian Snyder/Reuters)