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How many people have ever lived on Earth?
How many people have ever lived on Earth?
How many people have ever walked the Earth? No doubt its a monumental number, and increasing every minute, but how do we work it out?
23 September 2014
Part of the show Alien Hunters: The Search for ET
EARTH
Credit:
CC0
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How many people have ever since Homo sapiens evolved and how do we work this out?
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