Sri Lanka, Nov. 26 -- Tokyo has lost its long-held title as the world's most populous megacity and now ranks third, according to a new report.

Jakarta, in Indonesia, has taken the top spot and is predicted to keep it until 2050, when the rise of Dhaka is expected to see the Bangladeshi capital top the tables.

A new report from the United Nations shows the number of megacities - cities with a population of 10 million or more - quadrupled from eight in 1975 to 33 in 2025, and they're predominantly located in Asia.

The report, which uses UN estimates and is an update of the organisation's 2018 data, highlights the dramatic increase in city living, a relatively new phenomenon.

As recently as 1950, living in a city was highly unusual - with ...