Researchers estimate that the collective space taken up by cities has more than doubled in 20 years – from 240,000 sq km in 2000 to 520,000 sq km in 2020. Photo: Reuters/Nasa Researchers estimate that the collective space taken up by cities has more than doubled in 20 years – from 240,000 sq km in 2000 to 520,000 sq km in 2020. Photo: Reuters/Nasa
Researchers estimate that the collective space taken up by cities has more than doubled in 20 years – from 240,000 sq km in 2000 to 520,000 sq km in 2020. Photo: Reuters/Nasa

World’s cities doubled in land use over 20 years, with America leading urban sprawl, study finds

  • The rural-urban divide is a cause of global inequality, but both excessive density and the drive for lower density can be detrimental
  • Cities in Europe, Africa and South America were hemmed in by limits on either space or finances

Topic |   Urban planning
Researchers estimate that the collective space taken up by cities has more than doubled in 20 years – from 240,000 sq km in 2000 to 520,000 sq km in 2020. Photo: Reuters/Nasa Researchers estimate that the collective space taken up by cities has more than doubled in 20 years – from 240,000 sq km in 2000 to 520,000 sq km in 2020. Photo: Reuters/Nasa
Researchers estimate that the collective space taken up by cities has more than doubled in 20 years – from 240,000 sq km in 2000 to 520,000 sq km in 2020. Photo: Reuters/Nasa
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