Photo - In this photo provided by TED 2014 Conference, dancer Adrianne Haslet-Davis, left, performs on stage with dancer Christian Lightner at the 2014 TED Conference, Wednesday, March 19, 2014, in Vancouver, British Columbia. Haslet-Davis took to the stage with a new prosthetic limb to perform for the first time since losing part of her left leg in the 2013 Boston Marathon bombing. (AP Photo/TED 2014 Conference, James Duncan Davidson)
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