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