US high schoolers design low-cost filter to remove lead from water
When the pandemic forced schools to close, Rebecca Bushway, a science teacher in Washington, D.C., set her students an ambitious task: design and build a low-cost lead filter that attaches to faucets and removes the poisonous metal. Using 3D printing and high-school level chemistry, the team now has a working prototype — a three-inch (7.5 … Read more
