Computer scientist Luis von Ahn is best known for inventing those twisted, blurry words that websites ask you to type to post a comment or send an email. Host Ziya Tong talks to the genius award recipient about how he hopes to trick us all into digitizing old books, one CAPTCHA at a time. To see the full segment, visit www.pbs.org after original broadcast. Tune in to WIRED SCIENCE on your local PBS station (check local listings). For more information, visit www.pbs.org