Now place your left hand, fingers pointing up and palm facing you, against the left side of the tube, about halfway down (click to enlarge the diagram below). Notice that your hand appears to have a ...

Tracks from two humanlike species crossing paths in ancient Africa shed light on the tale of our specialized locomotion.

Corresponding author: Upper Extremity and Reconstructive Unit, Institute of Orthopaedics, Lerdsin Hospital, Department of Orthopaedic Surgery, College of Medicine, Rangsit University, 190 Silom Road, ...

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