LiveScience: Editor's note: By the end of this century, Earth may be home to 11 billion people, the United Nations has estimated, earlier than previously expected. As part of a week-long series, LiveScience is exploring what reaching this population milestone might mean for our planet, from our ability to feed that many people to our impact on the other species that call Earth home to our efforts to land on other planets. Check back here each day for the next installment.
Hong Kong, a city of 7 million inhabitants,......
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What 11 Billion People Mean for Sanitation
Posted by LiveScience: Tanya Lewis on November 27th, 2013
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