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Hasan Abdulameer
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The Dragons of Eden: Speculations on the Evolution of Human Intelligence, by Carl Sagan

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Neanderthals and the Cro-Magnons—who had average brain volumes of about 1,500 cubic centimeters; that is, more than a hundred cubic centimeters larger than ours.
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The Dragons of Eden: Speculations on the Evolution of Human Intelligence
The Dragons of Eden: Speculations on the Evolution of Human Intelligence
by Carl Sagan
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