Scientists discover why humans have such big brains

The adult human cerebral cortex has nearly twice as many neurons compared with the great apes’ Photograph: Pixel-shot/Alamy

The adult human cerebral cortex has nearly twice as many neurons compared with the great apes’ Photograph: Pixel-shot/Alamy

source https://www.theguardian.com/science/2021/mar/24/scientists-discover-why-the-human-brain-is-so-big