Profile: Luis von Ahn

A computer scientist finds novel ways to stop spammers and harness the brainpower of millions of people.

Games With a Purpose

In this interview, Luis von Ahn explains how his computer games are improving the Web, the downside of being a MacArthur "genius," and much more. Hear audio highlights or read the full interview.

Ask the Expert

Luis von Ahn answers questions about his life and work.

The Perfect Date

What's so special about June 23, 1912?

• Links & Books
• Transcript
• Participants
• Send Feedback
• Join the Discussion
• Credits

© | Created April 2009