Zac Vawter, fitted with an experimental "bionic" leg, looks out from the Ledge at the Willis Tower, Thursday, Oct. 25, 2012 in Chicago. Vawter is training for the world's tallest stair-climbing event ...

Zac Vawter, a 31-year-old software engineer from Seattle, Washington, celebrates after climbing to the top of the 103-story Willis Tower using the world's first neural-controlled Bionic leg in Chicago ...

Prosthetic legs have gotten smarter and smarter thanks to advanced sensors and lightweight motors, but this week they're getting their biggest overhaul yet: the latest bionic leg can be controlled ...

CHICAGO - Researchers have come up with new technology that may one day help amputee war veterans: an artificial leg that reads brain signals, and it's already being tested out. The bionic leg that ...

A new bionic suit allowed users to control robotic legs with thoughts while feeling artificial walking sensations Results showed a 92% success rate in translating brain signals into movement The ...