Two Australopithecus Species Co-Existed in Ethiopia 3.4 Million Years Ago
In 2009, paleoanthropologists found eight bones from the foot of an ancient human ancestor in 3.4-million-year-old sediments at…
Lead Exposure May Have Influenced Evolution of Human Brain, Behavior, and Development of Language
Several hominids — Australopithecus africanus, Paranthropus robustus, early Homo sp., Gigantopithecus blacki, Pongo sp., Papio sp., Homo neanderthalensis,…