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Young scientist invents device that detects lead in water

25 October 2017

Eleven-year-old scientist wins the 2017 Discovery Education 3M Young Scientist Challenge for inventing a device that detects lead in water. Roselle Chen reports.  

This 11-year-old girl is "America's Top Young Scientist" with her invention of Tethys, a device that detects lead in water.

WINNER OF THE 2017 DISCOVERY EDUCATION 3M YOUNG SCIENTIST CHALLENGE, GITANJALI RAO, SAYING said "Tethys, the Greek goddess of fresh water, is a lead detection tool. What you do is first dip a disposable cartridge, which can easily be removed and attached to the core device in the water you wish to test. Once you do that, that's basically the manual part. Then you just pull out an app on your phone and check your status and it looks like the water in this container is safe. So that's just very simple, about like a 10 to 15 second process."

Gitanjali Rao was affected by the Flint, Michigan water catastrophe when the city started using the Flint River for water in 2014, sparking a crisis that was linked to an outbreak of Legionnaires' disease, at least 12 deaths and dangerously high lead levels in children.

The seventh-grader said it took her five months to make Tethys from start to finish.

WINNER OF THE 2017 DISCOVERY EDUCATION 3M YOUNG SCIENTIST CHALLENGE, GITANJALI RAO said "My first couple of times when I was doing my experimentation and test, I did fail so many times and it was frustrating, but I knew that it was just a learning experience and I could definitely develop my device further by doing even more tests and getting advice from my mentor as well. So, never be afraid to try."

Rao won the 2017 Discovery Education 3M Young Scientist Challenge, along with a $25,000 prize.