Read MoreSub-Saharan Africa to account for one in every two children born in 2100, Lancet study says.Sub-Saharan Africa to account for one in every two children born in 2100, Lancet study says.

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Read MoreSub-Saharan Africa to account for one in every two children born in 2100, Lancet study says.Sub-Saharan Africa to account for one in every two children born in 2100, Lancet study says.