This month a new study reports that orangutans are particularly resourceful tool makers as they have been found to use a tool for communicating. Orangutans not only are sophisticated but, interestingly, share many similarities with humans. These “people of the forest,” as they have been called, have more in common with humans than do the other great apes. This includes features of anatomy, reproductive biology and behavior. This is interesting because it conflicts with evolutionary expectations. The conflict arises because there is one feature in which orangutans are not the closest species to humans: DNA.
Continue reading here.