Africa's cities to triple in size (BBC)

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The number of people living in African cities will triple over the next 40 years and by 2050 60% of Africans will be city dwellers, a UN report has said.
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UN-Habitat's Joan Clos said Africa needed to invest urgently in housing.

He told the BBC that sub-Saharan Africa could learn from North Africa as Egypt, Libya, Morocco and Tunisia had almost halved slum areas in the past 20 years.

Some 199.5 million people in sub-Saharan Africa live in slums, the highest number in the world, the UN said earlier this year.

According to UN-Habitat's State of African Cities 2010 report, urbanisation is happening faster in Africa than anywhere else in the world.
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more: http://www.bbc.co.uk/news/world-africa-11823146