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Men's Weekly

How smart were our ancestors? Turns out the answer isn't in brain size, but blood flow

  • Written by Roger S. Seymour, Professor Emeritus of Physiology, University of Adelaide
How smart were our ancestors? Turns out the answer isn't in brain size, but blood flowSkulls hold clues to intelligence. (Clockwise from left: Australopithecus, orangutan, gorilla, chimpanzee)Roger Seymour, Author provided

How did human intelligence evolve? Anthropologists have studied this question for decades by looking at tools found in archaeological digs, evidence of the use of fire and so on, and changes in brain size measured...

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