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In several cities, planners have begun replacing wide roads with narrow, tree-lined streets and shorter blocks, a style sometimes called the fifteen-minute neighbourhood. The idea is that daily needs such as groceries, schools, and clinics should sit within a short walk or bike ride of home. Supporters argue this cuts car dependence, lowers emissions, and revives local shops that benefit from passing foot traffic. Critics counter that retrofitting older suburbs is expensive and can push up nearby rents. Even so, early trials report that residents make more trips on foot, suggesting that convenience, not preaching, is what changes habits.