When you hop, run or jump, your legs behave like springs, absorbing and returning energy with each step. But what happens to ...

Human movements like hopping and running can be explained using a spring-mass model. In this model, the leg works like a ...

Hugh Herr, an engineer and biophysicist from MIT, has spent the last 34 years developing prosthetic limbs that outperform human movement. The work is close to his heart, as Herr had both legs ...