World’s oldest biped skeleton unearthed

The fossilised skeleton of a four million-year-old human ancestor able to walk on two legs could provide clues as to how humans’ upright walk evolved. The remains, found in north-east Ethiopia, are the oldest yet discovered of an upright hominid, scientists told a press conference in Addis Ababa, Ethiopia, on Saturday.
New Scientist Breaking News – World’s oldest biped skeleton unearthed