On The New Screen Savers, Megan Morrone introduces us to Gitanjali Rao. She's 11-years-old and won the Discovery Education 3M Young Scientist Challenge. We'll learn about the challenges to make her invention Tethys, a water lead contamination detector.

For the full episode, go to http://twit.tv/nss/130

Hosts: Megan Morrone, Leo Laporte, and Fr. Robert Ballecer, SJ

Guest: Gitanjali Rao

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