Science & Tech Solving evolutionary mystery of how humans came to walk upright Gayani Senevirathne (left) holds the shorter, wider human pelvis, which evolved from the longer upper hipbones of primates, which Terence Capellini is displaying. Niles Singer/Harvard Staff Photographer Kermit Pattison Harvard Staff Writer August 27, 2025 6 min read New study identifies genetic, developmental shifts that resculpted pelvis, setting ancestors apart from other primates The pelvis is often called the k...