This Tanzanian city may soon be one of the world’s most populous. Is it ready?

Dar es Salaam is the second-fastest growing city worldwide. Its planners are struggling to keep up.

Dar es Salaam, a city of six million on the Indian Ocean, is expected to have 10 million within a decade and—according to one speculative scenario—could have more than 70 million by 2100. Once Tanzania's capital, it's still the commercial hub and the seat of some government agencies.
Photograph by Nichole Sobecki, National Geographic

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