3.3-million-year-old fossil shows us how the spine evolved
(World News Science)

Thanks to the discovery of an astonishingly complete fossil of an ancient toddler in Ethiopia, a team of researchers has now discovered that key elements of the human spinal structure already were in place 3.3 million years ago - far earlier than experts had previously believed. Writing in the journal Proceedings of the National Academy of Science (PNAS), Carol Ward, a pathology and anatomical sciences professor at the University of Missouri School of Medicine, and her colleagues revealed that they discovered the...