Early Humans Walked Peculiarly? By Jennifer Viegas Discovery NewsEvidence In The Bones Feb. 27, 2006 — At least two species of early humans were knock-kneed and walked rather uniquely, according to a new study on seven anklebones that belonged to various early human ancestors from eastern and southern Africa. The study, which will be published in the April issue of the American Journal of Physical Anthropology, suggests that although the early humans walked on two feet, they did not always do so with our relatively smooth stride. "This is hard to explain, but easy to demonstrate," said Dan Gebo, who...