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The 13 year-old scientist's electricity-capturing device

A teenager has invented a device which gathers energy from the environment to create electricity. It only costs a few dollars to put together and she's won the Young Scientist Challenge's top prize of $25 000 for it. Maanasa Mendu from Ohio told us what motivated her and how the device, called "Harvest", works.

(Picture: Maanasa Mendu in October 2016. Credit: Andy King/Discovery Education)

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1 minute