In the technical description, the authors emphasize that the skeleton includes clavicle and shoulder-blade fragments, both upper arms, both forearms, plus part of the sacrum and hip bones - rare ...

"I'm stunned." says Per Ahlberg of Uppsala University, who coordinated the study; "A single track-bearing slab, which one person can lift, calls into question everything we thought we knew about when ...

Aside from our big brains, the trait that most distinguishes humans from other animals is our ability to walk fully upright on two legs, a style of movement without parallel in the animal kingdom. But ...