Lucy, an early human ancestor, could run upright but much slower than modern humans. New simulations show that muscle and ...

Joey Ballard is an internal medicine resident at the University of Illinois-Chicago. He wrote to "An Arm and a Leg" about a resolution the American Medical Association recently adopted calling on ...

I’ll see your arm and raise you an arm and two legs. It was the battle of the bots on the CES show floor as robot vacuum ...

suggesting she would have required significantly more energy to travel a given distance than a modern human would. Australopithecines like Lucy had large upper bodies, long arms and short legs ...