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    29 Nov 2014

    World Population Will Soar Higher Than Predicted

    World population will hit nearly 11 billion by 2100

    United Nations leaders have worried for decades about the pace of population growth. A few years ago leading calculations had global population peaking at nine billion by 2070 and then easing to 8.4 billion by 2100. Currently it stands at 7.2 billion. Recently the U.N. revised these numbers steeply upward: the population is now expected to rise to 9.6 billion by 2050 and continue to 10.9 billion by 2100 (black line, below). What caused this drastic revision? Almost all the increase comes from Africa (pink line). Earlier models “had anticipated that fertility rates in Africa would drop quickly, but they haven’t,” says Adrian Raftery, a statistician at the University of Washington, who assessed the revised estimates. How the world will feed a few billion more people is the question of the day.
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