And yet, in two million years, the human brain has nearly tripled in mass, going from the one-and-a-quarter-pound brain of our ancestor here, Habilis, to the almost three-pound meatloaf everybody here has between their ears.
Anant dels aproximats 600 grams del nostre antecessor, Homo habilis, al gairebé kilogram i mig de carn que tots tenim entre les orelles.