Vawter prepares to climb to 103rd story of Willis Tower using the world's first neural-controlled Bionic...
Zac Vawter, a 31-year-old software engineer from Seattle, Washington, prepares to climb to the 103rd story of the Willis Tower using the world's first neural-controlled Bionic leg in Chicago, November 4, 2012. According to the Rehabilitation Institute of Chicago, their Center for Bionic Medicine has worked to develop technology that allows amputees like Vawter to better control prosthetics with their own thoughts. REUTERS/John Gress (UNITED STATES - Tags: HEALTH SCIENCE TECHNOLOGY SOCIETY)