Sahelanthropus, Orrorin tugenensis, Ardipithecus kaddaba, Australopithecus, Paranthropus and finally Homo. Humans have traveled quite a long evolutionary path. Only one of these many species has managed to survive to the present day: Homo sapiens.

The Earth has been home to many species of plants and animals. More than 99% of them are now extinct, though it seems all of them had at least some short period of evolutionary prosperity. How is it that we humans have enjoyed such success, rather than any of the other closely related species that occupied the same or a similar ecological niche?

Sahelanthropus, Orrorin tugenensis, Ardipithecus kaddaba, Australopithecus, Paranthropus i wreszcie Homo. Człowiek przeszedł bardzo długą ewolucyjną drogę. Do mety dotarł tylko jeden gatunek: Homo sapiens.