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Jack Andraka speaks after receiving Smithsonian Magazine's first annual American Ingenuity Award for youth achievement on November 28, 2012 in Washington, DC.  - 

While some kids are dozing off in high school biology class, Jack Andraka was figuring out a way to fight cancer. A couple of years ago, the Maryland high school junior came up with a diagnostic test for pancreatic cancer that's 168 times faster than current tests. And also more affordable. Marketplace Tech host Ben Johnson talks to the teenager about what he's working on next. 

Click the audio player above to hear more.

Follow Ben Johnson at @@TheBrockJohnson