Radiolab - words that change the world

and accompanying video

Susan Schaller believes that the best idea she ever had in her life had to do with an isolated young man she met one day at a community college. He was 27-years-old at the time, and though he had been born deaf, no one had ever taught him to sign. He had lived his entire life without language--until Susan found a way to reach out to him.

phenomenal episode!