A very interesting & moving 3-part audio program on WNYC’s RadioLab: http://blogs.wnyc.org/radiolab/2010/08/09/words/

It’s almost impossible to imagine a world without words. But in this hour of Radiolab, we try to do just that. We speak to a woman who taught a 27-year-old man the first words of his life, and we hear a firsthand account of what it feels like to have the language center of your brain wiped out by a stroke. Plus: a group of children invent an entirely new language in Nicaragua in the 1970s.