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Visualizing How A Population Grows To 7 Billion
The U.N. says today symbolically marks the moment when the world's population reaches 7 billion. A little more than two centuries ago, the global population was 1 billion. How did it grow so big so fast? With the help of a sound montage and video, it gets a bit easier to see how the Earth can produce that kind of a crowd.
βhttps://www.npr.org/2011/10/31/141816460/visualizing-how-a-population-grows-to-7-billion
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