Aim for cities of all sizes to give everyone a fair go

INTERNATIONAL

Image by Daniel Ladenhauf – Flick/CC BY-NC
Image by Daniel Ladenhauf – Flick/CC BY-NC</span>We live in an urban world. By 2030, 66% of the world's population will live in cities, concentrated in only 3% of the planet's land area. But city sizes vary greatly, so what can city size tell us about their residents' quality of life?
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