Some chimpanzees appear to be more efficient at using tools to crack nuts than others within their groups. This efficiency could also give them an evolutionary advantage, since better nutcracking ...

(Hominins are a group of species that includes modern humans plus all our extinct ancestors and relatives since the split from the common ancestor we share with chimpanzees.) The Oldowan tools ...

Amandine Lions, a volunteer at the Papaye International association, carries Tchossa, a young orphaned chimpanzee on her back during their daily walk Populations of common chimpanzees, which used ...