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.
og er gået fra at have en hjerne på cirka et halvt kilo som vores forfader her, Habilis, til en næsten halvandet kilo kødfars som alle her har mellem ørerne.