New research shows brains of early humans (illustrated in blue) may have evolved from a more ape-like version (left) seen in a specimen from Dmanisi, Georgia, to the more modern humanlike one (right) from Sangiran, Indonesia, between 1.7 million and 1.5 million years ago. (M.S. Ponce de León and C.P.E. Zollikofer/University of Zurich)