How did humans get to be so smart, and when did this happen? To untangle this question, we need to know more about the intelligence of our human ancestors who lived 1.8 million years ago. It was at th
Did our free-roaming minds set the stage for language, as we mimed our adventures, real or imaginary? A new book explores an important theory about language
Nonhuman primates clearly do more than just screech meaningless sounds at each other, but what are the limits of their communication?