Scientists created artificial, life-like muscles for humanoid robots

For better or worse, some scientists seem dead set on infusing humanoid robots with more lifelike qualities. They’ve already experimented with stretching lab-grown human skin over robot faces and with a synthetic hydrogel skin that lets robots really “feel” burns and cuts. Now, a team of engineers at the University of Pennsylvania wants to dig under the skin. In a  study published this week in Advanced Functional Materials, the team describes a highly controllable artificial robot muscle