Chicago’s Willis (formerly “Sears”) Tower is one of the tallest skyscrapers in the world — and yesterday it was scaled by amputee/bionic-badass Zac Vawter. Vawter had assistance, of course, albeit in ...

Zac Vawter, a 31-year-old who lost his right leg in a motorcycle accident, became the first person to scale the 103-story Willis Tower in Chicago with a mind-controlled robotic leg. The artificial leg ...

CHICAGO Zac Vawter considers himself a test pilot. After losing his right leg in a motorcycle accident, the 31-year-old software engineer signed up to become a research subject, helping to test a ...

The Willis Tower climb will be the bionic leg's first test in the public eye, said lead researcher Levi Hargrove of the institute's Center for Bionic Medicine. The climb, called "SkyRise Chicago," is ...

Climbing up Willis Tower's 103 floors is an impressive feat for anyone. But for Zac Vawter it was an even more impressive feat when he climbed one of the world's tallest towers in a prosthetic leg ...

CHICAGO – The metal on Zac Vawter bionic leg gleamed as he climbed 103 floors of Chicago’s iconic Willis Tower, becoming the first person ever to complete the task wearing a mind-controlled prosthetic ...

CHICAGO (AP) — The metal on Zac Vawter's bionic leg gleamed as he climbed the 103 floors of Chicago's iconic Willis Tower, becoming the first person ever to complete the task wearing a mind-controlled ...

Zac Vawter considers himself a test pilot. After losing his right leg in a motorcycle accident, the 31-year-old software engineer signed up to become a research subject, helping to test a trailblazing ...