Artificial Foot (2 of 2) (IMAGE) University of Michigan Caption In this energy‑recycling foot, the University of Michigan engineers put wasted walking energy to work enhancing the power of ankle push‑off. Credit Steve Collins Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.