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'Bionic' man climbs Chicago skyscraper

'Bionic' man climbs Chicago skyscraper
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A man who lost his right leg in a motorbike accident has climbed to the top of one of the world’s tallest buildings.

Zak Vawter wore a mind-controlled bionic leg to reach the top of Chicago’s Willis Tower.

He climbed the 103 story structure in under one hour and without a break.