How gravity causes a perfectly spherical ball to roll down an inclined plane is part of the elementary school physics canon.

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

The human brain contains billions of neurons that continuously receive information and stimuli from the outside. To make ...

Researchers reveal the way our legs adapt to fast movements. When people hop at high speeds, key muscle fibers in the calf shorten rather than lengthen as forces increase, which they call 'negative ...