What is the 15-minute city?

(The Hill) -- The 15-minute city is either an urban-planning epiphany or a totalitarian nightmare, depending on whom you ask. The concept, credited to a Sorbonne University professor, promotes self-contained communities where residents live, work, shop and play within a radius of 15-minute travel by foot or bicycle. A new iteration of old demographic ideas drew attention in 2020 as a pillar in the campaign platform of Anne Hidalgo, the mayor of Paris.  Not until this year, th