Luis von Ahn is a computer science professor at Carnergie Mellon, and his latest project is a website called Duolingo. Its lofty goal is to translate the entire web into every major language, using nothing but volunteer translators. We find out how Luis plans to make this happen. (Runs 12:29)

Radio interview short or complete version located at: http://www.cbc.ca/spark/2011/12/spark-164-december-4-7-2011/

See: Spark 164