What Facebook can tell us about megacity growth

Data scientists at Facebook compared users’ hometowns with their current homes to discern the 10 cities with the most “coordinated migrations,” where at least 20% of the population of one city has moved to another city.

Source. The top 10 destinations:

  1. Lagos, Nigeria
  2. Istanbul, Turkey
  3. Bogota, Columbia
  4. Bangkok, Thailand
  5. Accra, Ghana
  6. Hyderabad, India
  7. Kampala, Uganda
  8. Lima, Peru
  9. Chennai, India
  10. London, Great Britain

People will get excited about the big data, but the insight I drew was that urban politics and economics are woefully understudied in development.