Science Behind The News: Crowdsourcing

When humans and computers work together, they can find solutions to many different types of problems. Luis von Ahn, a computer science professor at Carnegie Mellon University, explains the science behind crowdsourcing and how the concept is helping solve such diverse problems as digitizing books online and translating the web to foreign languages. "Science Behind the News" is produced in partnership with NBC Learn. Provided by the National Science Foundation & NBC Learn