Out on a limb: Arm-swinging riddle is answered – Yahoo News
Epic Human Question Finally Answered
Who am I? Where did I come from? Why do my arms waggle when I walk? Humans have been asking these questions since time began. Begging, fighting, struggling for the answers with every ounce of their being…and now finally we have an answer to one of the deepest questions ever asked. Out on a limb: Arm-swinging riddle is answered – Yahoo News
