There are 7.7 billion of us living on this Earth. Another 80 million every year, or 220,000 every day. Even if the pace has slowed down a little, the trend leads us to a world population of more than 8 billion souls by 2022 to reach the 10 billion mark in 2050.
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The population of the African continent is growing rapidly. Estimated at 140 million in 1900, it reached one billion in 2010. It will reach 2.5 billion in 2050 and more than 4 billion in 2100, according to the medium scenario of UN projections (see figure below). Today, one human being out of six lives in
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