‘I have never written of a stranger organ’: The rise of the placenta and how it helped make us human https://www.livescience.com/planet-earth/evolution/i-have-never-written-of-a-stranger-organ-the-rise-of-the-placenta-and-how-it-helped-make-us-human
fMRI scans of 151 participants showed that bilingual people had better connectivity between brain regions, especially if they learned their second language at a younger age. This effect was especially strong between the cerebellum and the left frontal cortex
1 Comment
Make us human? Most mammals are placentals.