The emotion behind invention: Dean Kamen on

Soldiers who’ve lost limbs in service face a daily struggle unimaginable to most of us. At TEDMED, Dean Kamen talks about the profound people and stories that motivated his work to give parts of their lives back with his design for a remarkable prosthetic arm. (Recorded at TEDMED 2009, February 2010 in San Diego, CA. Duration: 19:33)

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