"…rather than asking why human ancestors stood up from all fours, perhaps we should be asking why our ancestors never dropped down on all fours in the first place."

Want to boost your daily step count? A little competition may do more to achieve your goal than support or collaboration.

A bionic prosthesis that includes sensors that connect to residual nerves in the thigh allows amputees to feel their prosthetic foot and knee in real time.

Walkability, not proximity, determines how much people enjoy their local park, research suggests.

To find out more about how people respond to stumbling, and to eventually create better prosthetics, scientists had to trip people 190 times.

A tripod foot could make walking on hiking trails and other rough terrain more manageable for people who use a prosthetic.

To become better walkers and runners, the human body changed dramatically over several million years. New research indicates how that happened.

"This is less than 10 minutes a day for people to maintain their independence. It’s very doable."

Fossil toe and ankle bones offer clues to how our ancestors developed the ability to walk on two feet.