Water filter invented by high school student removes 99 percent of metals
https://www.upi.com/Science_News/2017/07/27/Water-filter-invented-by-high-school-student-removes-99-percent-of-heavy-metals/6061501170663/?utm_source=sec&utm_campaign=sl&utm_medium=10 Source Cited: www.upi.com Sign in to see full entry.
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