Profile: Luis von AhnA computer scientist finds novel ways to stop spammers and harness the brainpower of millions of people. Games With a PurposeIn 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 ExpertLuis von Ahn answers questions about his life and work. The Perfect DateWhat's so special about June 23, 1912? |
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