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Published November 04, 2012, 12:00 AM

Zac Vawter stands on his bionic leg


Zac Vawter stands on his bionic leg after arriving on the 103rd floor of Willis Tower, becoming the first person ever to complete the task wearing the mind-controlled prosthetic limb Sunday in Chicago. (AP Photo/Teresa Crawford)


Read the article: Amputee climbs 103 floors of Chicago skyscraper using thought-controlled bionic leg