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Oct 30, 2017, 12:54 pm123 pts
EcoWatch
An 11-year-old girl was given a top award after inventing "Tethys," a sensor that detects lead levels in water. Gitanjali Rao of Lone Tree, Colorado won the 2017 Discovery Education 3M Young Scientist Challenge and a $25,000 prize for the innovation, which she said was inspired by the water crisis in Flint ,…
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