Four legs new, Two legs much older?!

I never believe in large scale of evolution, well, obviously, coz I'm a Christian.

The theory of large scale evolution is just so shaky.

our upright walking started in the trees

Paul O’Higgins, of the Functional Morphology and Evolution unit at the University of York, UK, says the finding makes it more difficult to find a feature unique to the human ancestral line. "If extended hip and knee bipedalism did indeed arise in the distant past, this makes the task of identifying possible ancestors of the human line much more difficult," he says.

There has been tantalising fossil evidence suggesting an early origin for bipedalism, says Crompton. "And the orang-utan is the only ape with a knee joint similar to that of humans."