Man climbs Chicago skyscraper using bionic leg

Associated Press
Man climbs Chicago skyscraper using bionic leg

Zac Vawter's stands on his bionic leg after he arriving on the 103rd floor of Willis Tower, becoming the first person ever to complete the task wearing the mind-controlled prosthetic limb, Sunday, Nov. 4, 2012 in Chicago. Vawter, who lost his right leg in a motorcycle accident, put the smart limb on public display for the first time during an annual stair-climbing charity event called ìSkyRise Chicagoî hosted by the Rehabilitation Institute of Chicago, where he is receiving treatment. (AP Photo/Teresa Crawford)

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