In this talk for TED, Aimee Mullins challenges our perceptions of 'disability'.

From TED: The thesaurus might equate "disabled" with synonyms like "useless" and "mutilated," but ground-breaking runner Aimee Mullins is out to redefine the word. Defying these associations, she hows how adversity -- in her case, being born without shinbones -- actually opens the door for human potential.

Watch the video of Aimee's talk at http://is.gd/92HIP.