The Conversation

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

26-01-2020 Author: Roger S. Seymour, Professor Emeritus of Physiology, University of Adelaide

Skulls 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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