![]() "We are very confident that strong selection for running-which came at the expense of the historical ability to live in trees-was instrumental in the origin of the modern human body form," said Dennis Bramble, a biology professor at the University of Utah.īramble is co-author of the new study, published tomorrow in the science journal Nature. ![]() This ability, the researchers say, may explain why humans look the way they do today. Humans started to jog around two million years ago, according to fossil evidence of some distinctive features of the modern human body.Ī new study suggests humans may have left their tree-swinging ancestors behind because they developed into endurance runners.
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