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5 Ways Toilets Change the World -
What 11 Billion People Mean for Food SecurityThe world's population is projected to hit 11 billion by 2100. Not only will we have to feed all these people, but we'll have to do it in a way that's less taxing on the earth's resources.
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6 Ways to Feed 11 Billion People -
What 11 Billion People Mean for the Planet -
What 11 Billion People Mean for …
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World Population May Reach 11 Billion By 2100The new projection is 8 percent higher than a previous estimate, largely because fertility is declining more slowly in Africa than predicted
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Africa's Birth Rate Key Factor in 2100 Global PopulationThe population of the world will reach 7 billion on Oct. 31.
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Filmmaker Sir David Attenborough Calls Humans a PlagueFamed British naturalist warns of population growth.
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Humans Are 17 Million Tons OverweightThat's the equivalent of 170 aircraft carriers, or 242 million extra normal-weight people.
