As cities burst their seams, advocates have long argued that building new “smart” ones on their peripheries would help alleviate such problems. If African cities are creaking, the future looks even more forbidding. Africa’s urban population has trebled since 1990. Over the next 26 years it may expand by another 900m people. By 2100, five of the world’s seven most populous cities could be African. In much of Africa laws passed in the 1990s with export-processing zones in mind are becoming outdated. Today’s cities have far greater potential than the narrow industrial sites once envisaged. If African governments want new cities to work, they need to give the developers more of a free hand.  What is your take on satellite cities ?

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