Ancient footprints yield oldest signs of upright gait

Human ancestors may have been walking with an efficient, extended-leg technique by 3.6 million years ago

March 22, 2010 at 12:47 pm - More than 2 years ago

Despite a penchant for hanging out in trees, human ancestors living 3.6 million years ago in what’s now Tanzania extended their legs to stride much like people today do, a new study finds.