The UN report World population prospects: the 2012 revision, published on Thursday, predicts the world's population, now at 7.2 billion, will reach 8.1 billion in 2025. By mid-century, the world's population is expected to top 9.5 billion, reaching nearly 11 billion by 2100.
More than half of the growth predicted between now and 2050 is expected in Africa, where the number of people is set to more than double, from 1.1 billion to 2.4 billion. Africa's population will continue to rise even if there is a future drop in the average number of children each woman has, says the report, which predicts the number of people living on the continent could reach 4.2 billion (or more than 35% of total global population) by 2100.
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