Man with bionic leg to climb Chicago skyscraper

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Man with bionic leg to climb Chicago skyscraper

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Man with bionic leg to climb Chicago skyscraper

by Associated Press Videos 1:52 mins

Zac Vawter considers himself a test pilot. After losing his right leg in a motorcycle accident, the 31-year-old signed up to become a research subject, helping to test a trailblazing prosthetic leg that's controlled by his thoughts. (Oct. 31)

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