Emerging Technologies

Human brain size has tripled. Here's why

The volume of the human brain increased to be about three and a half times larger than our Australopithecus ancestors 3 million years ago. Image: REUTERS/Chris Helgren

Roger S. Seymour

Professor Emeritus of Physiology, University of Adelaide

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Emerging Technologies

Evolution of blood flow to the brains of human ancestors. The data reveals an increasing rate of blood flow among hominin species over 3 million years. Image: Royal Society Open Science/Roger Seymour, Vanya Bosiocic, Edward Snelling/Skull illustrations by Vivi Hu., CC BY

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