This special chronicles the race of two scientists - David Harrison and Greg Anderson - to document languages on the verge of extinction.

This special chronicles the race of two scientists - David Harrison and Greg Anderson - to document languages on the verge of extinction. In Siberia, India and Bolivia, the linguists confront head-on the very forces silencing languages: racism, humiliation and violent economic unrest. Their journey takes them deep into the heart of the cultures, revealing communities at risk when a language dies.