Research, BusinessArnold KristoffJanuary 11, 2018nano, nanotech, nanotechnology, 12 year old scientist, Tethys 12-year-old wins $25,000 for an invention that helps detect lead in water Research, BusinessArnold KristoffJanuary 11, 2018nano, nanotech, nanotechnology, 12 year old scientist, Tethys
