[00:06.24]For years, many scientists have considered walking on two legs as one sign of being human. [00:15.46]Early humans were not thought to have used their knuckle bones or other parts of their hands in walking. [00:23.59]Now, however, American s...
To do a job right, you need the right tools. Even a chimp knows that. According to a study in the American Journal of Primatology, chimps in the Congo use multiple tools to capture army ants. Youve probably seen footage of chimps using sticks to harv...